Filter Problems

Select a set of tags to display all problems with at least 1 of those tags


Problem ID
Your Score
Title
Source
Problem Type
#ACs
helloworld N/A Tags: Syntax Hello World Classic problem Batch 1653
addition N/A Tags: Syntax Addition of 2 numbers Classic problem Batch 1412
exam N/A Tags: Syntax Exam RI Nov Sel 2020 (syy) Batch 1254
sumint N/A Tags: Syntax Sum of Integers Dunjudge Archive Batch 1179
maximum N/A Tags: Syntax Maximum Dunjudge Archive Batch 1139
3nplus1 N/A Tags: Syntax 3nplus1 Classic Problem Batch 1001
lunchbox N/A Tags: Greedy Lunch Box NOI 2016 Batch 975
evenorodd N/A Tags: Syntax evenorodd Classic Problem Batch 936
psle N/A Tags: Syntax Old PSLE Grading System Classic Problem Batch 928
gcd N/A Tags: Math, Syntax Greatest Common Divisor Classic Problem Batch 878
fizzbuzz N/A Tags: Math, Syntax FizzBuzz Classic Problem Batch 823
rightangtri N/A Tags: Syntax rightangtri Classic Problem Batch 776
fibo N/A Tags: Dynamic Programming, Math Fibonacci Classic Problem Batch 755
flamethrower N/A Tags: Brute Force Flame Thrower Dunjudge Archive Batch 716
potatosalad N/A Tags: Greedy potatosalad Classic Problem Batch 634
adjmatrix N/A Tags: Graph Theory Adjacency Matrix Dunjudge Archive Batch 630
prime N/A Tags: Math Prime Numbers Classic Problem Batch 628
boxispull N/A Tags: Adhoc, Syntax Box is Pull Codeforces Raif Round 1 (bensonlzl) Batch 609
minimum N/A Tags: Syntax minimum Classic Problem Interactive 587
adjlist N/A Tags: Graph Theory Adjacency List Dunjudge Archive Batch 570
brick N/A Tags: Data Structures brick Dunjudge Archive Batch 556
timeexam N/A Tags: Math, Syntax What's the Time? RI November Course Stage 2 Selection Test 2021 (ryangohca) Batch 550
card N/A Tags: Data Structures Card NOI 2010 Batch 533
xmas N/A Tags: Syntax xmas NOI 2009 Batch 524
paint N/A Tags: Greedy paint NOI 2011 Batch 516
lis_easy N/A Tags: Dynamic Programming lis_easy Classic problem Batch 515
smurf N/A Tags: Brute Force, Syntax smurf RI Deccourse 2018 Selection Test (tch1001) Batch 506
cuberoot N/A Tags: Binary Search, Math, Syntax cuberoot Classic Problem Batch 484
greeting N/A Tags: Syntax CNY Greetings 2020 CNY (errorgorn) Batch 463
bracketex N/A Tags: Data Structures, Syntax bracketex Dunjudge Archive Batch 449
3nplus1II N/A Tags: Syntax 3nplus1II Classic Problem Batch 439
prefixsums N/A Tags: Dynamic Programming, Syntax prefixsums Classic Problem (YeoBL20) Batch 435
gotoschool N/A Tags: Syntax Go To School ABC142 Batch 432
exponentiate N/A Tags: Math Exponentiate Classic Problem Batch 431
uniquenumbers N/A Tags: Data Structures uniquenumbers Classic Problem Batch 428
contestcalc N/A Tags: Math, Syntax contestcalc Dunjudge Archive Batch 422
diamond N/A Tags: Syntax diamond Classic Problem Batch 417
lengthsort N/A Tags: Syntax lengthsort Dunjudge Archive Batch 416
simp N/A Tags: Adhoc, Brute Force Simp Codeforces 1033A Batch 404
descsort N/A Tags: Syntax descsort Dunjudge Archive Batch 403
weddingcoins N/A Tags: Greedy weddingcoins Dunjudge Archive Batch 394
subgraphs N/A Tags: Graph Theory Subgraphs Dunjudge Archive Batch 385
nprime N/A Tags: Brute Force, Math Prime NOI 2008 Batch 379
guanine N/A Tags: Data Structures guanine Dunjudge Archive Batch 373
addition2 N/A Tags: Joke Addition? Hello 2022 (oolimry) Batch 372
arrayfind N/A Tags: Binary Search arrayfind Dunjudge Archive Batch 368
medianstring N/A Tags: Syntax medianstring Dunjudge Archive Batch 366
gecko N/A Tags: Dynamic Programming gecko NOI 2008 Batch 358
splithunny N/A Tags: Graph Theory splithunny Dunjudge Archive Batch 353
binarycoins N/A Tags: Bitmask, Greedy, Syntax binarycoins Dunjudge Archive Batch 350
pigeons N/A Tags: Brute Force pigeons Classic Problem Batch 345
pairsums N/A Tags: Syntax Button Pairs UWCOI 2020 (socho, astoria, kimbj0709) Batch 343
typo N/A Tags: Syntax Typo ABC221 Batch 342
area N/A Tags: Syntax area Dunjudge Archive Batch 331
area_noi N/A Tags: Syntax area_noi NOI 2023 Qualification Contest (yanhao) Batch 330
catlunch N/A Tags: Data Structures, Greedy catlunch RI/RJC NOI Selection Test 2016 Batch 314
lvm N/A Tags: Brute Force, Data Structures lvm NOI 2008 Batch 308
moneychanger N/A Tags: Dynamic Programming moneychanger Dunjudge Archive Batch 306
GSS N/A Tags: Greedy GSS Dunjudge Archive Batch 302
lcs N/A Tags: Dynamic Programming lcs Classic problem Batch 300
segmenttree N/A Tags: Data Structures Segment Tree Classic problem Batch 298
beareatrabbit N/A Tags: Dynamic Programming Bear Eat Rabbit Classic Problem Batch 297
flybot N/A Tags: Dynamic Programming flybot Dunjudge Archive Batch 296
lis N/A Tags: Binary Search, Dynamic Programming Longest Increasing Subsequence Classic problem Batch 295
competition N/A Tags: Greedy competition NOI 2021 Qualification Batch 292
bestplace N/A Tags: Greedy, Syntax bestplace NOI 2017 Batch 287
stepgame N/A Tags: Dynamic Programming, Greedy stepgame Classic Problem Batch 285
foodchain N/A Tags: Math, Syntax Food Chain Dec Trg 2019 (Elementary) Batch 283
veryeasyproblem N/A Tags: Joke veryeasyproblem Anderson Fluff Contest (shoryu386) Batch 282
catfight N/A Tags: Line Sweep/Sliding Window catfight Dunjudge Archive Batch 275
foreveralone N/A Tags: Data Structures foreveralone Dunjudge Archive Batch 273
gift N/A Tags: Syntax gift NOI 2007 Batch 267
squidzofrenzic N/A Tags: Binary Search squidzofrenzic Dunjudge Archive Batch 262
ccs N/A Tags: Binary Search, Data Structures ccs Dunjudge Archive Batch 260
management N/A Tags: Syntax Management ABC163C Batch 258
mrt N/A Tags: Graph Theory MRT Dunjudge Archive Batch 254
countalp N/A Tags: Syntax countalp Classic Problem Batch 253
dijkstra N/A Tags: Graph Theory dijkstra Dunjudge Archive Batch 249
1609 N/A Tags: Joke 1609 April Fools' 2021 (0rang3) Batch 249
milkweed N/A Tags: Graph Theory milkweed Dunjudge Archive Batch 243
choochoo N/A Tags: Syntax Choo Choo RI-HCI Final Contest 2022 (bensonlzl) Batch 239
pascal N/A Tags: Dynamic Programming, Math pascal Dunjudge Archive Batch 238
coinbag N/A Tags: Dynamic Programming coinbag Dunjudge Archive Batch 237
car N/A Tags: Graph Theory car Dunjudge Archive Batch 234
snack N/A Tags: Dynamic Programming, Greedy snack Dunjudge Archive Batch 232
pandaeyes N/A Tags: Greedy pandaeyes Dunjudge Archive Batch 229
wabot N/A Tags: Greedy wabot December Course 2019 Advanced Final Contest (bensonlzl) Batch 228
primefactorization N/A Tags: Math primefactorization Dunjudge Archive Batch 219
eeducation N/A Tags: Syntax Elementary Education Dec Course 2021 Elementary Final Contest (shenxy13) Batch 216
4sum N/A Tags: Meet in the Middle 4sum NOI 2008 Batch 216
frogs N/A Tags: Syntax Frogs Winter Computer School 2010/11 Team Contest #1 Batch 215
01knapsack N/A Tags: Dynamic Programming 0-1 Knapsack Classic problem (Atcoder Educational DP Contest) Batch 215
palindromicfizzbuzz N/A Tags: Syntax Palindromic FizzBuzz NOI 2019 Prelims (pwypeanut) Batch 207
general N/A Tags: Graph Theory general Classic Problem Batch 204
ljubomora N/A Tags: Binary Search ljubomora COCI 2012/2013 Batch 203
illuminate N/A Tags: Math, Syntax Illuminate RI-HCI NOI Selection Test 2020 (bensonlzl) Batch 202
helloworld2 N/A Tags: Joke Hello World? Hello 2022 (jamessng) Batch 200
coincombinations N/A Tags: Dynamic Programming coincombinations Classic Problem Batch 199
swapsort N/A Tags: Adhoc Swap Sort HCI December Course Selection 2021 (kai824, pavement) Batch 195
potatotree N/A Tags: Data Structures potatotree RI Nov Sel 2020 (syy) Batch 193
candymountain_ex N/A Tags: Data Structures, Dynamic Programming candymountain_ex Dunjudge Archive Batch 192
carpark N/A Tags: Greedy carpark Dunjudge Archive Batch 190
medianheap N/A Tags: Data Structures medianheap Dunjudge Archive Batch 188
collectmushrooms6 N/A Tags: Dynamic Programming CollectMushrooms NOI 2018 Batch 187
bananasmoothie N/A Tags: Greedy Banana Smoothie Dunjudge Archive (shenxy13) Batch 186
ippt N/A Tags: Syntax IPPT Dec Course 2023 Selection Test (errorgorn) Batch 185
party N/A Tags: Data Structures, Graph Theory party Dunjudge Archive Batch 185
generosity N/A Tags: Joke Generosity April Fools' 2022 (oolimry) Batch 185
buffet N/A Tags: Dynamic Programming buffet Dunjudge Archive Batch 185
segmenttree2 N/A Tags: Data Structures Segment Tree 2 Classic Problem Batch 184
scalars N/A Tags: Greedy scalars Dunjudge Archive Batch 184
peakfinding N/A Tags: Syntax Peak Finding UWCOI 2020 (socho, astoria, kimbj0709) Batch 183
fenwicktree N/A Tags: Data Structures fenwicktree Classic Problem Batch 183
clocktower N/A Tags: Math, Syntax Clock Tower RI December Course Selection Test 2021 (Deadeye) Batch 183
lcm N/A Tags: Math lcm Classic Problem Batch 181
lineup N/A Tags: Line Sweep/Sliding Window lineup USACO Silver Nov 2011 Batch 180
swords N/A Tags: Syntax swords NOI 2023 Qualification Contest (yanhao) Batch 179
fuel N/A Tags: Greedy fuel Dunjudge Archive Batch 177
trains N/A Tags: Dynamic Programming trains Dunjudge Archive Batch 175
omnomnom N/A Tags: Dynamic Programming, Graph Theory, Trees omnomnom Classic Problem Batch 174
lightningrod N/A Tags: Adhoc, Data Structures LightningRod NOI 2018 (guangxuan) Batch 171
reciprocals N/A Tags: Constructive Algorithms, Syntax Reciprocals HCI December Course Selection 2021 (huangqr, pavement) Batch 170
summit N/A Tags: Binary Search summit Dunjudge Archive Batch 170
stonk N/A Tags: Greedy Stonks Dec Trg 2019 (Elementary) (shenxy13) Batch 169
rmaxq N/A Tags: Data Structures Range Max Query Dunjudge Archive Batch 162
ultimateifelse N/A Tags: Syntax Ultimate ifelse ANDSS Contest 1 (Syntax) (LCJLY) Batch 162
cups N/A Tags: Data Structures cups Deccourse 2021 DS II Contest (errorgorn) Batch 161
floors N/A Tags: Data Structures floors Dunjudge Archive Batch 161
7up N/A Tags: Syntax 7up RI November Course Stage 2 Selection Test 2019 Batch 160
simplebridges N/A Tags: Math, Syntax simplebridges ANDSS February 2023 Contest (shoryu386) Batch 160
typicalstairs N/A Tags: Dynamic Programming Typical Stairs ABC 129 Batch 159
fractions N/A Tags: Syntax fractions Classic Problem (YeoBL20) Batch 159
speakers N/A Tags: Greedy speakers Dunjudge Archive Batch 158
sealevel N/A Tags: Graph Theory sealevel Dunjudge Archive Batch 158
sort N/A Tags: Adhoc sort Classic Problem? Batch 158
swayingflowers N/A Tags: Math, Syntax swayingflowers ANDSS Welcome 2023 (Day 1) (shoryu386) Batch 154
ancestor N/A Tags: Dynamic Programming, Graph Theory, Trees ancestor Classic problem Batch 154
ihate1111 N/A Tags: Adhoc, Math I Hate 1111 Codeforces Round 723 (errorgorn) Batch 149
hedgehogcrimes_easy N/A Tags: Dynamic Programming Hedgehog Crimes (Easy Version) Classic Problem Batch 148
hamster1 N/A Tags: Dynamic Programming Hamster's Journey Atcoder Educational DP Contest Batch 148
magicwand N/A Tags: Graph Theory magicwand Dunjudge Archive Batch 147
badpotato N/A Tags: Dynamic Programming badpotato Dunjudge Archive Batch 147
sandd N/A Tags: Binary Search sandd Classic Problem Interactive 147
sightseeing N/A Tags: Graph Theory, Trees sightseeing NOI 2014 Batch 146
solonim N/A Tags: Explicitly Excluded (from IOI), Math, Syntax Solo Nim Dunjudge Archive Batch 145
pushups N/A Tags: Math pushups Dunjudge Archive Batch 145
leftright N/A Tags: Data Structures Left and Right Dec Trg 2019 (Elementary) (oolimry) Batch 144
globalwarming N/A Tags: Line Sweep/Sliding Window Global Warming NOI 2013 Batch 144
twomeals N/A Tags: Brute Force, Dynamic Programming, Greedy twomeals Dunjudge Archive Batch 143
boundlessboxes N/A Tags: Graph Theory boundlessboxes Dunjudge Archive Batch 143
eelimination N/A Tags: Data Structures Elementary Elimination Dec Course 2021 Elementary Final Contest (shenxy13) Batch 142
dyingpolynomial N/A Tags: Binary Search Dying Polynomial RI Nov Sel 2020 (JustAWallaby) Batch 142
mountains N/A Tags: Data Structures Mountains NOI 2020 Prelims (feeder) Batch 141
collectmushrooms N/A Tags: Syntax collectmushrooms Dunjudge Archive Batch 139
breakfast N/A Tags: Syntax breakfast Dunjudge Archive Batch 139
dinowalk N/A Tags: Graph Theory dinowalk Classic Problem Batch 139
explosion N/A Tags: Math explosion Classic Problem Batch 138
universe N/A Tags: Graph Theory, Trees universe Dunjudge Archive Batch 137
payraise N/A Tags: Graph Theory payraise Dunjudge Archive Batch 137
1821 N/A Tags: Constructive Algorithms, Graph Theory, Joke, Trees 1821 April Fools' 2021 (zaneyu) Batch 136
razlika N/A Tags: Data Structures, Line Sweep/Sliding Window razlika COCI 2013 Batch 136
pigeonhole N/A Tags: Data Structures pigeonhole Dunjudge Archive Batch 134
arrayproblem N/A Tags: Greedy arrayproblem Codeforces Batch 132
poi N/A Tags: Syntax poi IOI 2009 Batch 132
knightmoves N/A Tags: Graph Theory knightmoves Dunjudge Archive Batch 129
snowball N/A Tags: Greedy, Syntax snowball ANDSS Welcome 2023 (Day 1) (shoryu386) Batch 128
wormholes N/A Tags: Dynamic Programming wormholes Dunjudge Archive Batch 128
conversations_easy N/A Tags: Data Structures Zookeeper's Conversations (Easy Version) RI-HCI December Course Selection 2020 (shenxy13) Batch 126
bracketsyndrome N/A Tags: Adhoc, Data Structures Bracket Syndrome RI-HCI NOI Selection Test 2019 Batch 126
amicablecats N/A Tags: Math, Syntax amicablecats Dunjudge Archive Batch 125
labels N/A Tags: Adhoc labels NOI 2020 Finals (Damian) Batch 125
eescapism N/A Tags: Adhoc, Math Elementary Escapism Dec Course 2021 Elementary Final Contest (shenxy13) Batch 125
rotarylock N/A Tags: Data Structures rotarylock HCI NOI Selection Test 2015 Batch 123
grid N/A Tags: Dynamic Programming Grid Atcoder Educational DP Contest Batch 123
taxcollection N/A Tags: Greedy, Syntax taxcollection RI-HCI December Course Selection 2020 (JustAWallaby) Batch 123
omnomnom2 N/A Tags: Graph Theory, Trees omnomnom2 Classic Problem Batch 122
ballot N/A Tags: Data Structures ballot Dunjudge Archive Batch 122
entropy N/A Tags: Greedy, Syntax entropy RI-HCI December Course Selection 2020 (0rang3) Batch 121
staircase N/A Tags: Greedy Staircase ABC 148D Batch 119
lol N/A Tags: Dynamic Programming lol Dunjudge Archive Batch 117
candies N/A Tags: Data Structures candies Dunjudge Archive Batch 117
chinese N/A Tags: Syntax chinese Dunjudge Archive Batch 117
oranges2 N/A Tags: Graph Theory, Trees oranges2 RI Deccourse 2018 Selection Test (0rang3) Batch 117
minstack N/A Tags: Data Structures minstack Dunjudge Archive Interactive 117
lostarray N/A Tags: Adhoc, Constructive Algorithms Lost Array NOI 2019 Prelims Batch 116
f7 N/A Tags: Greedy F7 COCI 2012/2013 Batch 116
reading N/A Tags: Math, Syntax Reading Cat RI November Course Stage 2 Selection Test 2022 (wangy412) Batch 116
transform N/A Tags: Brute Force, Dynamic Programming, Graph Theory transform Dunjudge Archive Batch 115
housing N/A Tags: Dynamic Programming housing NOI 2008 Batch 114
heatwv N/A Tags: Graph Theory Heat Wave Dunjudge Archive Batch 112
chessislands N/A Tags: Graph Theory chessislands NOI 2010 Selection Test Batch 111
eeniemeenie N/A Tags: Syntax eeniemeenie HCI November Final Contest 2023 (shoryu386) Batch 110
hashcollision N/A Tags: Joke Hash Collision Hello 2021 (shenxy13) Interactive 110
watching N/A Tags: Binary Search, Dynamic Programming watching JOI Open 2013 Batch 109
lboard N/A Tags: Brute Force, Dynamic Programming L-Board NOI 2022 Qualification Batch 109
smallprimes N/A Tags: Brute Force, Math Small Primes Classic Problem Batch 108
rabbiteatrabbit N/A Tags: Dynamic Programming rabbiteatrabbit Dec Trg 2019 (Elementary) (jamielim) Batch 108
inversions N/A Tags: Data Structures, Divide and Conquer inversions Dunjudge Archive Batch 108
routine N/A Tags: Binary Search Routine Cat RI November Course Stage 2 Selection Test 2022 (wangy412) Batch 107
levenshtein N/A Tags: Dynamic Programming levenshtein Classic problem Batch 107
bananafarm N/A Tags: Data Structures bananafarm NOI 2015 Batch 107
papaya N/A Tags: Graph Theory papaya Dunjudge Archive Batch 106
nihonese N/A Tags: Syntax nihonese ISC 2020 practice (errorgorn) Batch 105
neckties N/A Tags: Data Structures, Greedy Just Long Neckties JOI 2020 Final Round Batch 105
abbb N/A Tags: Greedy abbb Codeforces Raif Round 1 (errorgorn) Batch 105
collectmushrooms2 N/A Tags: Data Structures collectmushrooms2 Dunjudge Archive Batch 104
binaryroads N/A Tags: Graph Theory binaryroads Dunjudge Archive Batch 103
pilot N/A Tags: Adhoc, Data Structures pilot NOI 2019 (pwypeanut) Batch 102
workload N/A Tags: Dynamic Programming December Training Workload Classic Problem Batch 102
zooqueue N/A Tags: Data Structures Zoo Queue NUS December Training 2021 Diagnostic Test (shenxy13) Batch 101
modulochain N/A Tags: Math, Syntax modulochain Anderson Trg (shoryu386) Batch 101
4russians N/A Tags: Dynamic Programming 4russians RI-HCI NOI Selection Test 2020 (jamielim) Batch 100
spellofweakness N/A Tags: Binary Search, Greedy, Line Sweep/Sliding Window Spell Of Weakness Dunjudge Archive (dantoh) Batch 99
wabbit N/A Tags: Greedy wabbit RI-HCI-NUSH NOI Selection Test 2021 (oolimry) Batch 99
eating N/A Tags: Data Structures Eating Cat RI November Course Stage 2 Selection Test 2022 (wangy412) Batch 99
nemo N/A Tags: Graph Theory nemo Dunjudge Archive Batch 99
problematicjourney N/A Tags: Binary Search, Graph Theory Problematic Journey Classic Problem Batch 98
letters N/A Tags: Dynamic Programming letters Dunjudge Archive Batch 98
telephone N/A Tags: Syntax Telephone Game ANDSS Welcome 2023 (Day 1) (shoryu386) Batch 98
bobek N/A Tags: Bitmask, Meet in the Middle bobek CEOI 2015 Batch 97
conversations N/A Tags: Data Structures Zookeeper's Conversations Singapore Zoo (shenxy13) Batch 97
assembly N/A Tags: Dynamic Programming assembly Dunjudge Archive Batch 97
rank N/A Tags: Graph Theory rank NOI 2008 Batch 96
fraud N/A Tags: Adhoc, Math fraud NOI 2021 Finals (Damian) Batch 95
optmilk N/A Tags: Data Structures, Dynamic Programming Optimal Milking Dunjudge Archive Batch 95
nicenumber N/A Tags: Joke nicenumber Anderson Fluff Contest (haydendoo) Batch 95
routers N/A Tags: Greedy routers Dunjudge Archive Batch 95
727 N/A Tags: Greedy, Math 727 HCI-NUSH NOI Selection 2022 (errorgorn) Batch 94
coke N/A Tags: Dynamic Programming, Greedy Coke NUSH ISC 2020 (errorgorn) Batch 93
train N/A Tags: Dynamic Programming train Dunjudge archive Batch 93
exponentiate_ex N/A Tags: Math exponentiate_ex Classic Problem Batch 92
railway N/A Tags: Graph Theory, Trees railway CPSPC 2004 Batch 92
ping N/A Tags: Syntax ping RI HCI NOI Selection 2019 Practice (bensonlzl) Interactive 92
firstabc N/A Tags: Syntax firstabc ABC 311A Batch 92
coinjourney N/A Tags: Binary Search Coin Journey RI November Course Stage 2 Selection Test 2021 (kym) Batch 92
carrots N/A Tags: Greedy carrots Codeforces Raif Round 1 (errorgorn) Batch 91
duckwander N/A Tags: Syntax duckwander ANDSS Contest 1 (Syntax) (shoryu386) Batch 91
missingnumber N/A Tags: Syntax Missing Number CSES Batch 91
nis N/A Tags: Data Structures, Dynamic Programming nis Dunjudge Archive Batch 91
conlang N/A Tags: Syntax conlang HCI EC³ Beginner Contest (geometric) Batch 90
deque N/A Tags: Dynamic Programming Deque AtCoder Educational DP Contest Batch 90
orchard N/A Tags: Dynamic Programming, Line Sweep/Sliding Window orchard NOI 2014 Batch 89
goodprogrammer N/A Tags: Explicitly Excluded (from IOI), Joke Be a Good Programmer April Fools 2023 (shoryu386) Batch 89
workoutplan N/A Tags: Greedy Workout plan Bubble Cup 12 Div 1 Batch 88
localexpress N/A Tags: Dynamic Programming localexpress AtCoder Typical DP Contest Batch 88
leave N/A Tags: Data Structures leave Dunjudge Archive Batch 88
simcity N/A Tags: Graph Theory simcity Dunjudge Archive Batch 88
runway N/A Tags: Binary Search, Graph Theory Jianzhi’s Runway Show RI NOI Selection Test 2017 Batch 88
employee N/A Tags: Graph Theory, Trees employee Dunjudge Archive Batch 88
stamps N/A Tags: Dynamic Programming stamps Dunjudge Archive Batch 88
harddisk N/A Tags: Bitmask, Brute Force, Meet in the Middle harddisk 2015 NOI Training Problem-Setter Contest Batch 87
supplies N/A Tags: Graph Theory supplies Dunjudge Archive Batch 87
eevacuation N/A Tags: Dynamic Programming, Graph Theory Elementary Evacuation Dec Course 2021 Elementary Final Contest (shenxy13) Batch 87
penguinmountain N/A Tags: Syntax penguinmountain December Course 2023 Elementary Final Contest (penguin133) Batch 87
slimes N/A Tags: Syntax slimes ABC 143C Batch 86
roadsideadverts N/A Tags: Dynamic Programming, Graph Theory, Trees roadsideadverts NOI 2017 Batch 86
0405 N/A Tags: Joke, Math 0405 April Fools' 2021 (zaneyu) Batch 85
smurfpaths N/A Tags: Data Structures, Graph Theory, Trees smurfpaths RI-HCI NOI Selection Test 2020 (rs) Batch 85
justright N/A Tags: Binary Search justright Dunjudge Archive Batch 84
lineup2 N/A Tags: Syntax Lineup RI Problem Setter Contest 2019 (rs) Batch 83
stickytape N/A Tags: Greedy Sticky Tape Classic Problem Batch 82
replacedigits N/A Tags: Data Structures Replace Digits ACL Beginner Contest Batch 82
kfc N/A Tags: Math, Syntax kfc ANDSS Contest 1 (Syntax) (haydendoo) Batch 82
hungryrabbits1 N/A Tags: Brute Force, Greedy Hungry Rabbits 1 RI-HCI Final Contest 2022 (bensonlzl) Batch 81
picnic N/A Tags: Binary Search, Greedy Picnic Codeforces Global Round 17 Batch 81
monsters N/A Tags: Greedy Monsters Dec Course 2023 Selection Test (beepbeepsheep) Batch 80
logs N/A Tags: Binary Search logs AtCoder Batch 80
deathray N/A Tags: Data Structures deathray Dec Trg 2019 (Elementary) (shenxy13) Batch 80
digits N/A Tags: Data Structures digits Deccourse 2021 DS II Contest (errorgorn) Batch 80
flappyrabbit N/A Tags: Greedy Flappy Rabbit HCI-NUSH NOI Selection 2022 (pavement) Interactive 80
goodseq N/A Tags: Data Structures goodseq Dunjudge Archive Batch 80
inheritance N/A Tags: Binary Search, Graph Theory inheritance JOI 2014/2015 Batch 80
parallelogramisation N/A Tags: Data Structures parallelogramisation Dec Course 2023 Elementary Contest 4 (DS I) (shoryu386) Batch 79
oridance N/A Tags: Dynamic Programming Orientation Dance Codeforces 1509C Batch 79
commando N/A Tags: Data Structures, Dynamic Programming commando APIO 2010 Batch 79
nextprime N/A Tags: Math, Syntax nextprime ABC 149C Batch 79
singlefile N/A Tags: Data Structures singlefile Dunjudge Archive Batch 78
guessqueue N/A Tags: Brute Force, Data Structures Guess the Queue Kattis (modified) (ryangohca) Batch 78
commonsubstring N/A Tags: Dynamic Programming commonsubstring Dunjudge Archive Batch 78
penguinfood N/A Tags: Data Structures penguinfood Dunjudge Archive Batch 78
sightseeing2 N/A Tags: Graph Theory, Trees sightseeing2 RI NOI Selection Test 2015 Batch 77
charges N/A Tags: Graph Theory Experimental Charges NOI 2019 Prelims (ranaldlys) Batch 77
doll_noi N/A Tags: Data Structures, Greedy doll_noi NOI 2023 Qualification Contest (yanhao, oolimry) Batch 76
lunchcombo N/A Tags: Binary Search, Greedy lunchcombo RI November Course Stage 2 Selection Test 2019 Batch 76
fireandbeary N/A Tags: Graph Theory fireandbeary Dunjudge Archive (jamielim) Batch 76
snakenladder N/A Tags: Dynamic Programming snakenladder Dunjudge Archive Batch 75
hacking N/A Tags: Graph Theory Hacking Classic problem (fyss006) Batch 75
pandacity N/A Tags: Graph Theory, Greedy pandacity Dunjudge Archive Batch 75
erp N/A Tags: Graph Theory erp Dunjudge Archive Batch 75
makingparallelograms N/A Tags: Adhoc makingparallelograms December Course 2023 Elementary Final Contest (shoryu386) Batch 75
applefarm N/A Tags: Graph Theory applefarm NUSH ISC 2020 (oolimry) Batch 74
burgers N/A Tags: Binary Search, Data Structures, Math burgers NOI 2023 Qualification Contest (oolimry, bensonlzl, yanhao) Batch 74
towerdefense N/A Tags: Graph Theory towerdefense Dunjudge Archive Batch 74
cookieclickeralpha N/A Tags: Math, Syntax cookieclickeralpha Google Code Jam 2014 Batch 73
vainish N/A Tags: Dynamic Programming Vanish 2015-2016 NOI Training Diagnostic Test Batch 73
levelingup N/A Tags: Dynamic Programming Leveling Up RI November Course Stage 2 Selection Test 2021 (ryangohca) Batch 73
fenwicktree_easy N/A Tags: Syntax fenwicktree_easy RI November Course 2023 Diagnostic Test (Potato3218, nianhe) Batch 72
iqtest N/A Tags: Math iqtest Valentine's Day Contest 2022 (errorgorn) Batch 72
samelength N/A Tags: Joke Same Length Hello 2021 (errorgorn) Batch 72
poklon N/A Tags: Data Structures, Square Root Decomposition poklon COCI 2016/2017 Batch 72
restaurant N/A Tags: Greedy restaurant Dunjudge Archive Batch 72
lualectures N/A Tags: Constructive Algorithms, Greedy Lua Lectures Classic Problem Batch 71
rblock N/A Tags: Graph Theory rblock USACO 2011 December Contest, Silver Division Batch 71
christmasfeast N/A Tags: Adhoc Christmas Feast Educational Round 2 (errorgorn) Batch 71
summarising2020 N/A Tags: Information Theory, Joke Summarising 2020 Hello 2021 (shenxy13) Interactive 71
walking N/A Tags: Dynamic Programming walking NOI 2012 Batch 70
towers N/A Tags: Data Structures, Dynamic Programming towers Codeforces 474E Batch 70
skillmoves N/A Tags: Data Structures, Greedy skillmoves RI November Course Stage 2 Selection Test 2019 Batch 69
construct N/A Tags: Dynamic Programming, Graph Theory Constructing Birthday Presents RI-HCI-NUSH NOI Selection Test 2021 (0rang3) Batch 69
purplecandy N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window Purple Candy Classic Problem (shenxy13, ryangohca) Batch 68
crypto N/A Tags: Data Structures crypto NOI 2020 Qualification (Damian) Batch 68
greenbeans N/A Tags: Adhoc, Math, Syntax Green Beans Mayhem RI November Course Stage 2 Selection Test 2021 (ryangohca, kym) Batch 68
clique N/A Tags: Data Structures clique Algorithm Class Mini-Contest 8 Batch 68
1503 N/A Tags: Adhoc, Joke 1503 April Fools' 2021 (jamielim) Batch 68
drones N/A Tags: Graph Theory Drones HCI December Course Selection 2021 (cstuart) Batch 68
entropy2 N/A Tags: Adhoc, Brute Force entropy2 RI December Course Selection Test 2021 (kym) Batch 67
bacteria N/A Tags: Data Structures bacteria Dunjudge Archive Batch 67
devour N/A Tags: Adhoc devour HCI November Final Contest 2023 (penguin133) Batch 67
unmerge N/A Tags: Dynamic Programming Unmerge Codeforces 1381B Batch 67
topical N/A Tags: Adhoc Topical NOI 2023 Finals (bensonlzl) Batch 67
mandarins N/A Tags: Math Mandarins 2020 CNY Batch 67
gotoschool_ex N/A Tags: Syntax gotoschool_ex RI November Course 2023 Diagnostic Test (NeeNawAmbulance, nianhe) Batch 67
cny N/A Tags: Greedy cny ANDSS Contest 2 (Greedy and Bruteforce) (LCJLY) Batch 67
cardtrick N/A Tags: Data Structures Card Trick Classic Problem (oolimry) Batch 67
buyingcandy N/A Tags: Greedy Buying Candy ABC 308F Batch 66
supermarket N/A Tags: Data Structures, Line Sweep/Sliding Window supermarket RI Dec Course Sel 2017 Batch 66
candles N/A Tags: Adhoc candles ABC 107C Batch 66
history N/A Tags: Dynamic Programming history Dunjudge Archive Batch 66
collectmushrooms3 N/A Tags: Data Structures collectmushrooms3 Dunjudge Archive Batch 66
peddler N/A Tags: Dynamic Programming, Graph Theory Peddler ABC 188 Batch 66
stones N/A Tags: Graph Theory, Trees stones Dunjudge Archive Batch 65
numbers N/A Tags: Dynamic Programming Palindrome-Free Numbers BOI 2013 Batch 65
convexhull N/A Tags: Data Structures Convex Hull Classic Problem (ryangohca) Batch 65
padoru N/A Tags: Graph Theory Hashire Sori Yo! Dec Course 2020 BAPS (peaceknight05) Batch 65
graphcraft N/A Tags: Graph Theory graphcraft Dunjudge Archive Interactive 65
flights N/A Tags: Graph Theory flights Dunjudge Archive Batch 65
variety N/A Tags: Dynamic Programming variety RI November Course Stage 2 Selection Test 2019 Batch 65
lps N/A Tags: Dynamic Programming lps Dunjudge Archive Batch 64
tourist N/A Tags: Data Structures, Greedy tourist IOI 2012 Practice Tasks Batch 64
homeworkextension N/A Tags: Syntax homeworkextension ANDSS Contest 1 (Syntax) (Josh28) Batch 64
ladybugs N/A Tags: Dynamic Programming ladybugs Dunjudge Archive Batch 64
divisibility N/A Tags: Dynamic Programming divisibility Dunjudge Archive Batch 63
travel N/A Tags: Greedy Travel CCO 2015 Batch 63
gentlepairs N/A Tags: Syntax gentlepairs ABC 187B Batch 63
knapsack N/A Tags: Dynamic Programming Knapsack NOI 2018 Prelims Batch 63
penguingathering N/A Tags: Brute Force penguingathering ABC 156C Batch 63
sherlockinversions N/A Tags: Data Structures, Square Root Decomposition sherlockinversions Dunjudge Archive Batch 62
tickethandling N/A Tags: Data Structures tickethandling Dec Course 2023 Elementary Contest 4 (DS I) (shoryu386) Batch 62
cheerleaders N/A Tags: Dynamic Programming cheerleaders Atcoder Educational DP Contest Batch 62
fruitsequences N/A Tags: Adhoc, Data Structures Fruit Sequences Codeforces Raif Round 1 (bensonlzl) Batch 62
grassplant N/A Tags: Data Structures, Graph Theory, Trees Grass Planting Dunjudge Archive Batch 62
numericalstrings N/A Tags: Greedy, Math numericalstrings RI November Course Stage 2 Selection Test 2019 Batch 62
boundedpermutation N/A Tags: Adhoc, Dynamic Programming, Math Bounded Permutation HCI-NUSH NOI Selection 2022 (maomao90) Batch 61
monopoly N/A Tags: Dynamic Programming monopoly Dunjudge Archive Batch 61
shortest N/A Tags: Explicitly Excluded (from IOI), Math shortest Dunjudge Archive Batch 61
bosses N/A Tags: Brute Force, Graph Theory, Greedy, Trees bosses BOI 2016 Batch 61
pairs N/A Tags: Binary Search pairs AtCoder Beginner Contest 155 Batch 61
nevergiveup N/A Tags: Joke Never Give Up April Fools 2023 (bron, penguin133) Batch 61
eatcake N/A Tags: Divide and Conquer Eating Cake Educational Codeforces Round 94 Batch 61
buygifts N/A Tags: Binary Search buygifts Codeforces 1619D Batch 61
singleflip N/A Tags: Syntax Single Flip TROC 24 (maomao90) Batch 61
luarulers N/A Tags: Greedy Lua Rulers Codeforces 1748C Batch 61
catchingcheaters N/A Tags: Dynamic Programming Catching Cheaters Codeforces Round 683 (Div 1) Batch 60
deforestation N/A Tags: Binary Search, Greedy deforestation HCI November Final Contest 2023 (TheRaptor) Batch 60
lowelements N/A Tags: Adhoc lowelements ABC 152C Batch 60
identifyinggirlfriends N/A Tags: Data Structures Identifying Girl Friends Classic Problem (ryangohca, siewjh) Batch 60
basement N/A Tags: Data Structures, Dynamic Programming Basement Codeforces 1842C Batch 59
bookshelf N/A Tags: Data Structures bookshelf Dunjudge Archive Batch 59
frog3 N/A Tags: Dynamic Programming Frog 3 Atcoder Educational DP Contest Batch 58
gfriendmania N/A Tags: Data Structures The 200000 Girlfriends Who Really, Really, Really, Really, Really Love Zane CSES Batch 58
ljll N/A Tags: Math LJLL NUSH ISC 2020 (errorgorn) Batch 58
1402 N/A Tags: Adhoc, Joke 1402 April Fools' 2021 (bensonlzl) Batch 58
dquery N/A Tags: Data Structures, Square Root Decomposition dquery Classic Problem Batch 57
sterilizing N/A Tags: Data Structures sterilizing JOI 2014/15 Batch 57
firelord N/A Tags: Dynamic Programming firelord RI Nov Sel 2020 (jiahng) Batch 57
iqtest3 N/A Tags: Constructive Algorithms, Graph Theory iqtest3 AGC 50A Batch 57
quillvsowl N/A Tags: Adhoc, Line Sweep/Sliding Window Quill Vs Owl Dec Course 2020 BAPS (jamielim) Batch 57
goofyrooks N/A Tags: Adhoc goofyrooks December Course 2023 Elementary Final Contest (penguin133) Batch 57
buycomputer N/A Tags: Greedy, Syntax buycomputer Dec Trg 2019 (Elementary) (errorgorn) Batch 56
treecutting N/A Tags: Brute Force, Graph Theory, Trees Tree Cutting NOI 2022 Qualification Batch 56
snapknack N/A Tags: Dynamic Programming snapknack Dunjudge Archive Batch 56
modsum N/A Tags: Dynamic Programming, Math modsum NOI 2012 Batch 56
discharging N/A Tags: Data Structures, Dynamic Programming discharging NOI 2020 Finals (huajun) Batch 56
nonboringsequences N/A Tags: Divide and Conquer nonboringsequences Dunjudge Archive Batch 55
rectangleoutline N/A Tags: Dynamic Programming, Line Sweep/Sliding Window Rectangle Outline USACO 2016 January Contest, Platinum Batch 55
xorb N/A Tags: Math, Syntax xorb Dunjudge Archive Batch 55
supperbox N/A Tags: Divide and Conquer, Dynamic Programming Estelle’s Supper Box RI-HCI NOI Selection Test 2018 Batch 55
primepie N/A Tags: Math primepie Dunjudge Archive Interactive 54
optimalsubseq N/A Tags: Binary Search, Data Structures optimalsubseq Codeforces 1227D2 Batch 54
treepruning N/A Tags: Brute Force, Graph Theory, Trees Tree Pruning Codeforces 1593E Batch 54
guards N/A Tags: Divide and Conquer, Dynamic Programming Guards Hackerrank IOI 2014 Practice Contest 2 Batch 53
performance N/A Tags: Math Performance NUSH ISC 2020 (oolimry) Batch 53
parade N/A Tags: Dynamic Programming, Graph Theory, Trees parade Dunjudge Archive Batch 53
specialgirlfriends N/A Tags: Math, Syntax specialgirlfriends Modified ABC 106C (shoryu386) Batch 53
findingpavement N/A Tags: Brute Force, Syntax Finding Pavement Atcoder Code Festival 2016 Final Batch 53
dna_ioi N/A Tags: Adhoc Mutating DNA IOI 2021 Interactive 53
letterstamper N/A Tags: Dynamic Programming Letter Stamper Google Code Jam 2010 (modified) Batch 53
unluckyfloors N/A Tags: Dynamic Programming unluckyfloors NOI 2016 Batch 53
votingcities N/A Tags: Bitmask, Graph Theory Voting Cities NOI 2022 Finals Batch 53
feast N/A Tags: Binary Search, Dynamic Programming, Greedy feast NOI 2019 (guangxuan) Batch 52
warp N/A Tags: Bitmask, Dynamic Programming warp HCI NOI Selection Retest 2020 (bensonlzl) Batch 52
magiccarps N/A Tags: Brute Force, Syntax magiccarps ANDSS Contest 2 (Greedy and Bruteforce) (shoryu386) Batch 52
hoofpaperscissor N/A Tags: Dynamic Programming Hoof, Paper, Scissors USACO 2017 January Contest, Gold Batch 52
examinations N/A Tags: Data Structures, Line Sweep/Sliding Window examinations JOI Batch 52
sortingtrainers N/A Tags: Adhoc Sorting Trainers Bologna IOI in Teams 2017 Batch 51
lasers N/A Tags: Adhoc, Data Structures lasers NOI 2019 Batch 51
ballgame N/A Tags: Data Structures, Dynamic Programming ballgame Dunjudge Archive Interactive 51
primesort N/A Tags: Graph Theory, Math Prime Sort Dunjudge Archive Batch 51
traineeline N/A Tags: Data Structures traineeline ABC 247D Batch 51
closedrooms N/A Tags: Adhoc, Graph Theory closedrooms AtCoder Grand Contest 014 Batch 51
pizzeria N/A Tags: Data Structures Pizzeria Queries CSES Batch 51
luckynumbers2 N/A Tags: Math luckynumbers2 Dec Course Final Contest 2017 Batch 50
rubies N/A Tags: Binary Search rubies Dunjudge Archive (pwypeanut) Batch 50
powervillage N/A Tags: Greedy powervillage December Course 2023 Elementary Final Contest Batch 50
alienalien N/A Tags: Syntax alienalien AOI 2023 Day 1 (shoryu386) Batch 50
gridgame N/A Tags: Graph Theory gridgame Dunjudge Archive Batch 50
basketball N/A Tags: Binary Search, Greedy basketball NUSH ISC 2020 (dantoh) Batch 50
hungryrabbits2 N/A Tags: Data Structures Hungry Rabbits 2 RI-HCI Final Contest 2022 (bensonlzl) Batch 49
gymbadges N/A Tags: Dynamic Programming, Greedy Gym Badges NOI 2022 Finals (huajun) Batch 49
atleasttripledate N/A Tags: Dynamic Programming, Math atleasttripledate ABC 178D Batch 49
scanner N/A Tags: Dynamic Programming scanner Dunjudge Archive Batch 49
decayedbridges N/A Tags: Graph Theory decayedbridges Dunjudge Archive Batch 49
candyshop N/A Tags: Data Structures candyshop Classic Problem Batch 49
exhibition N/A Tags: Greedy Exhibition JOI 2018/2019 Final Round Batch 48
flipcards N/A Tags: Binary Search, Dynamic Programming Cards Ucup Stage 8 M (modified) Batch 48
bracketscore N/A Tags: Greedy bracketscore AGC48 Batch 48
kthsubstring N/A Tags: Adhoc kthsubstring ARC 097 Batch 48
deletingnumbers N/A Tags: Constructive Algorithms, Greedy Deleting Numbers Grand Prix of Urals Batch 48
aircon N/A Tags: Data Structures aircon Codeforces Round #757 (Div. 2) Batch 47
change N/A Tags: Greedy change NOI 2011 Batch 47
skyline N/A Tags: Graph Theory, Greedy skyline HCI NOI Selection Retest 2020 (bensonlzl) Batch 47
rainbowrabbit N/A Tags: Adhoc, Greedy rainbowrabbit RI-HCI December Course Selection 2019 (bensonlzl) Batch 47
manycolours N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees manycolours ABC 133 Batch 47
stories N/A Tags: Dynamic Programming, Graph Theory Stories Cat RI November Course Stage 2 Selection Test 2022 (AJR) Batch 47
jumpontree N/A Tags: Graph Theory, Trees jumpontree yosupo's judge Batch 47
sos N/A Tags: Greedy Sum Of Squares December Course 2023 Advanced Final Contest (pavement) Batch 47
penguinislands N/A Tags: Dynamic Programming, Graph Theory penguinislands Dunjudge Archive Batch 46
garden N/A Tags: Graph Theory Garden Cat RI November Course Stage 2 Selection Test 2022 (tux, ryangohca) Batch 46
brackets N/A Tags: Greedy, Slope Trick Bracket Subsequence Classic Problem (zengminghao) Batch 46
redblacktree N/A Tags: Adhoc, Graph Theory, Trees redblacktree Codeforces 1156D Batch 46
eta N/A Tags: Trees eta ABC 202E Batch 46
nou N/A Tags: Adhoc no "u" December Course 2018 Elementary Final Contest (bensonlzl) Batch 46
rootedlca N/A Tags: Graph Theory, Trees Rooted LCA folklore (errorgorn) Batch 46
llis N/A Tags: Dynamic Programming Longest LIS NUSH NOI Selection Test 2018 Batch 46
integralmania N/A Tags: Data Structures integralmania Dec Course 2023 Elementary Contest 4 (DS I) (Tyx2019) Batch 45
network N/A Tags: Graph Theory, Greedy, Trees network NOI 2023 Qualification Contest (errorgorn) Batch 45
smallprimes_ex N/A Tags: Meet in the Middle Small Primes? Classic Problem? Batch 45
badnim N/A Tags: Explicitly Excluded (from IOI), Math badnim Educational Round 7 (errorgorn) Batch 45
candyboxes N/A Tags: Data Structures candyboxes Rujia Liu's Present 3 (Kattis) Batch 45
ferries N/A Tags: Graph Theory ferries NOI 2013 Batch 45
subknapsack N/A Tags: Dynamic Programming Knapsack for All Subsets Atcoder Beginner Contest 169 Batch 45
pigeonnests N/A Tags: Data Structures, Graph Theory, Trees pigeonnests RSA Fun Contest (shenxy13) Batch 45
guards_ex N/A Tags: Adhoc, Greedy, Joke Guards (Extreme) Zane (zaneyu, ryangohca) Batch 45
malcolm N/A Tags: Line Sweep/Sliding Window malcolm COCI 2012/2013 Batch 45
iqtest2 N/A Tags: Math iqtest2 April Fools' 2022 (errorgorn) Batch 44
spaceinvaders N/A Tags: Brute Force, Data Structures, Dynamic Programming, Line Sweep/Sliding Window spaceinvaders Educational Round 1 (bensonlzl) Batch 44
armpit N/A Tags: Adhoc armpit RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 44
zanesletters N/A Tags: Data Structures Zane's Letters Classic Problem (ryangohca, siewjh) Batch 44
losingsleep N/A Tags: Brute Force, Math losingsleep ARC 119A Batch 44
fractionalmultiset N/A Tags: Dynamic Programming Fractional Multiset ARC 107 Batch 44
adjacentswaps N/A Tags: Brute Force, Greedy Adjacent Swaps Dunjudge Archive (shenxy13) Batch 44
snail N/A Tags: Adhoc, Syntax Snail NOI 2018 Prelims Batch 44
gwynethandtree N/A Tags: Divide and Conquer, Graph Theory, Trees Gwyneth and Tree Codeforces 342E Batch 44
girlfriend N/A Tags: Dynamic Programming, Graph Theory girlfriend Dunjudge Archive Batch 43
journey3 N/A Tags: Dynamic Programming Journey NOI 2018 Batch 43
obstacletree N/A Tags: Dynamic Programming, Graph Theory, Greedy, Trees obstacletree Codeforces 1528A Batch 43
strikes N/A Tags: Graph Theory, Trees strikes POI 2017 Batch 43
appeal N/A Tags: Data Structures appeal Dunjudge Archive Batch 43
manyjobs N/A Tags: Greedy manyjobs ABC 131D Batch 43
square_ioi N/A Tags: Dynamic Programming square_ioi IOI 2014 Practice Interactive 43
trivialexam_ex_ex N/A Tags: Explicitly Excluded (from IOI), Joke trivialexam_ex_ex April Fools 2023 (oolimry, elainagrey, Xiaoyang) Batch 43
pokenumbers N/A Tags: Math pokenumbers Dunjudge Archive Batch 43
bank N/A Tags: Bitmask, Dynamic Programming Bank IZhO 2014 Day 1 Batch 42
election N/A Tags: Data Structures, Dynamic Programming election Dunjudge Archive Batch 42
train_ex N/A Tags: Dynamic Programming train_ex Dunjudge Archive Batch 42
swimming N/A Tags: Graph Theory Constructing a Swimming Pool RI-HCI-NUSH NOI Selection Test 2021 (0rang3) Batch 42
socks N/A Tags: Adhoc, Syntax socks December Course 2018 Elementary Final Contest (Damian) Batch 41
cokelesssugar N/A Tags: Data Structures, Greedy Coke: Less Sugar Codeforces 1415E (bensonlzl) Batch 41
wires N/A Tags: Adhoc Wires RI-HCI NOI Selection Test 2019 (bensonlzl) Interactive 41
fuelstation N/A Tags: Data Structures fuelstation NOI 2020 Qualification (feeder) Batch 41
addk N/A Tags: Data Structures, Math addk EJOI 2021 Batch 41
lfs N/A Tags: Dynamic Programming, Math Longest Factor Subsequence Educational Round 5 (errorgorn) Batch 41
Unbalanced N/A Tags: Adhoc unbalanced ABC 043D Batch 41
numberfun N/A Tags: Dynamic Programming numberfun Dunjudge Archive Batch 40
bingo N/A Tags: Adhoc, Constructive Algorithms Bingo Grand Prix of Daejeon Batch 40
naptime N/A Tags: Graph Theory, Greedy naptime RI-HCI December Course Selection 2020 (cstuart) Batch 40
growingtrees N/A Tags: Binary Search, Data Structures growingtrees BOI 2011 Batch 40
goinghome_agc N/A Tags: Data Structures, Greedy goinghome_agc AGC 023 Batch 40
minimise N/A Tags: Greedy minimise ABC 101C Batch 40
mugger N/A Tags: Dynamic Programming mugger RI Problem Setter Contest 2019 (ngmh) Batch 40
indivisibility N/A Tags: Math indivisibility Dunjudge Archive Batch 40
perfectprimes N/A Tags: Math perfectprimes Anderson Fluff Contest (Josh28, shoryu386) Batch 40
race N/A Tags: Divide and Conquer, Trees Race IOI 2011 Interactive 40
feedthewallabies N/A Tags: Graph Theory Feed the Wallabies RI December Course Selection Test 2021 (syy) Batch 40
cht N/A Tags: Data Structures, Dynamic Programming Convex Hull Trick Classic Problem Batch 39
promotion N/A Tags: Data Structures, Graph Theory, Trees Promotion Counting USACO 2017 Jan, Platinum Batch 39
motivation N/A Tags: Greedy Motivation is Dead AOI 2023 Day 1 (shoryu386) Batch 39
combo N/A Tags: Adhoc Combo IOI 2018 Interactive 39
special N/A Tags: Dynamic Programming special Dunjudge Archive Batch 39
reverseandmin N/A Tags: Adhoc reverseandmin ARC142A Batch 39
cowland N/A Tags: Data Structures, Graph Theory, Trees Cow Land USACO 2019 February Contest, Gold Batch 39
progression N/A Tags: Data Structures progression NOI 2020 Finals (Damian) Batch 39
dogmonkey N/A Tags: Math dogmonkey ABC 065C Batch 39
binaryspells N/A Tags: Greedy, Math binaryspells ANDSS Contest 2 (Greedy and Bruteforce) (shoryu386) Batch 39
hole N/A Tags: Binary Search, Dynamic Programming hole Dunjudge Archive Batch 39
pokeadd N/A Tags: Math pokeadd Dunjudge Archive Batch 39
potionshard N/A Tags: Greedy Potions (Hard Version) Codeforces Round 723 (errorgorn, oolimry) Batch 38
pythonindentation N/A Tags: Dynamic Programming pythonindentation Codeforces 909C Batch 38
sortbooks N/A Tags: Data Structures sortbooks IZhO 2019 Batch 38
christmaxtrees N/A Tags: Graph Theory, Greedy christmaxtrees Codeforces 1283D Batch 38
flip N/A Tags: Graph Theory Flipping Edges JOIG 2021 Batch 38
potionseasy N/A Tags: Dynamic Programming, Greedy Potions (Easy Version) Codeforces Round 723 (errorgorn, oolimry) Batch 38
wallabyhop N/A Tags: Data Structures, Line Sweep/Sliding Window Wallaby Hop RI December Course Selection Test 2021 (jiahng) Batch 38
duckduckgo N/A Tags: Greedy duckduckgo Codeforces 1091F Batch 38
whackamole N/A Tags: Binary Search, Line Sweep/Sliding Window Whack-A-Mole Codeforces 1852A Batch 38
goombatower N/A Tags: Binary Search, Data Structures Goomba Tower Timus 1439 Batch 38
lemmas N/A Tags: Graph Theory lemmas Educational Round 1 (errorgorn) Batch 37
gotoubun N/A Tags: Data Structures, Dynamic Programming gotoubun folklore (errorgorn) Batch 37
buycoke N/A Tags: Dynamic Programming Buying Coke Kattis Batch 37
chunlian N/A Tags: Data Structures chunlian Dunjudge Archive Batch 37
rarsum N/A Tags: Dynamic Programming rarsum Raffles Cat Helping Contest 2013 Batch 37
boardvision N/A Tags: Syntax Board Vision RI Novcourse Final Contest 2023 (zixuan, nianhe) Batch 37
airplane N/A Tags: Graph Theory, Greedy Airplane NOI 2023 Finals (bensonlzl, oolimry) Batch 37
verticallychallenged N/A Tags: Data Structures Vertically Challenged Girlfriends ABC 234D Batch 37
progressionspells N/A Tags: Greedy, Line Sweep/Sliding Window Progression Spells Codeforces 1661D Batch 37
packaging N/A Tags: Data Structures, Greedy, Math Packaging Codeforces 1690E Batch 37
snakesnack2 N/A Tags: Line Sweep/Sliding Window snakesnack2 RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 37
troubles N/A Tags: Adhoc, Data Structures, Dynamic Programming troubles Dunjudge Archive Batch 37
bracketsuperseq N/A Tags: Dynamic Programming Shortest Bracket Supersequence Codeforces 1272F Batch 36
waterbottles N/A Tags: Adhoc, Math waterbottles HCI EC³ Beginner Contest (AlphanumericUsername) Batch 36
housevisit N/A Tags: Dynamic Programming, Graph Theory, Trees housevisit CNY Contest 2019 (bensonlzl) Batch 36
deliveroo N/A Tags: Data Structures, Greedy Deliveroo RI November Course Stage 2 Selection Test 2021 (Deadeye) Batch 36
stackweights N/A Tags: Data Structures stackweights CSES Problem Set Batch 36
lazycat N/A Tags: Bitmask, Dynamic Programming, Graph Theory lazycat Dunjudge Archive Batch 36
addone N/A Tags: Dynamic Programming Add One Codeforces 1513C Batch 36
teleporting N/A Tags: Binary Search teleporting Codeforces Round 790(Div 4) (modified) Batch 36
conductslip N/A Tags: Greedy Conduct Slip RI Novcourse Final Contest 2023 (RandomPerson, Tyx2019) Batch 35
firefighting N/A Tags: Dynamic Programming, Graph Theory, Trees firefighting NOI 2020 Qualification Batch 35
candies_joi N/A Tags: Adhoc, Greedy candies_joi JOI 2017/2018 Spring Camp Batch 35
zanesgift N/A Tags: Dynamic Programming zanesgift CF 1881E Batch 35
modules N/A Tags: Binary Search, Data Structures, Dynamic Programming, Line Sweep/Sliding Window modules NUSH NOI Selection Test 2018 Batch 35
cudak N/A Tags: Binary Search, Dynamic Programming cudak COCI 2007/2008 Batch 35
guessproblem N/A Tags: Information Theory, Joke Guess Problem peepeepoopoo (Potato3218, ryangohca) Batch 35
simpletask N/A Tags: Data Structures A Simple Task Codeforces 558E Batch 35
summarising2023 N/A Tags: Joke Summarising 2023 Hello 2024 (siewjh) Batch 35
catleap N/A Tags: Graph Theory catleap Dunjudge Archive Batch 35
fruits N/A Tags: Data Structures, Greedy fruits Dunjudge Archive Batch 34
multipaths N/A Tags: Dynamic Programming, Graph Theory, Trees Multiple Paths Dunjudge Archive Batch 34
snowcow N/A Tags: Data Structures, Graph Theory, Trees Snowcow USACO 2019 December Contest Platinum Batch 34
appletree N/A Tags: Graph Theory appletree Dunjudge Archive Batch 34
trivialexam N/A Tags: Explicitly Excluded (from IOI), Joke 小菜一碟 April Fools 2023 (Xiaoyang) Batch 34
password N/A Tags: Data Structures, Dynamic Programming, Greedy, Slope Trick password NOI 2021 Finals (ngyupeng6) Batch 34
postcard N/A Tags: Dynamic Programming postcard Codeforces 4D Batch 34
chope N/A Tags: Adhoc Chope ARC 152A Batch 33
fortunetelling N/A Tags: Data Structures Fortune Telling 2 JOI 2014 Batch 33
boxes_hkicpc N/A Tags: Graph Theory, Trees Boxes 2016 ACM ICPC Asia Hong Kong Regional Batch 33
bunnyscore N/A Tags: Adhoc, Data Structures bunnyscore RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Interactive 33
riggedroads N/A Tags: Graph Theory, Greedy, Trees riggedroads NOI 2019 (pwypeanut) Batch 33
hdb N/A Tags: Data Structures, Dynamic Programming hdb Dunjudge Archive Batch 32
installingapps N/A Tags: Dynamic Programming, Greedy Installing Apps NWERC 2017 Batch 32
eexploration N/A Tags: Graph Theory Elementary Exploration Dec Course 2021 Elementary Final Contest (shenxy13) Batch 32
ducknuggetconvention N/A Tags: Data Structures, Divide and Conquer Duck Nugget Convention Valentines Contest 2021 (oolimry) Batch 32
bosubaiko N/A Tags: Adhoc, Greedy Bosu Baiko Educational Round 6 (errorgorn) Batch 32
figurines N/A Tags: Dynamic Programming figurines Luogu P1164 Batch 32
closingshop N/A Tags: Dynamic Programming, Graph Theory Closing Shop Codeforces 721C Batch 32
doubletrouble N/A Tags: Data Structures, Greedy Double Trouble Dec Trg 2019 (Elementary) (oolimry) Batch 32
bombing2 N/A Tags: Graph Theory bombing2 Dunjudge Archive Batch 32
atm N/A Tags: Graph Theory The Great ATM Robbery APIO 2009 Batch 32
deda N/A Tags: Binary Search, Data Structures deda COCI 2017/2018 Batch 32
cake N/A Tags: Brute Force, Data Structures cake CEOI 2014 Batch 32
kusac N/A Tags: Math, Syntax kusac COCI 2013/2014 Batch 32
inspections N/A Tags: Data Structures Inspections NOI 2023 Finals (bensonlzl) Batch 32
obstacles N/A Tags: Binary Search, Dynamic Programming obstacles Codeforces 360B Batch 32
xuehuapiaopiao N/A Tags: Binary Search, Data Structures 雪花飘飘 ABC 248D (Modified) Batch 32
treepruning2 N/A Tags: Graph Theory, Greedy, Trees Pruning Trees Codeforces 1593E (modified) (ecxx) Batch 32
belittle N/A Tags: Dynamic Programming belittle ANDSS Welcome 2023 (Day 2) (shoryu386) Batch 31
motest2 N/A Tags: Joke, Math MOtest2 April Fools 2023 (Tyx2019) Batch 31
tiles N/A Tags: Bitmask, Data Structures, Dynamic Programming tiles NOI 2021 Finals (eutroph) Batch 31
mountainbridges N/A Tags: Data Structures, Dynamic Programming mountainbridges HCI November Final Contest 2023 (huangqr) Batch 31
assignpaths N/A Tags: Binary Search, Graph Theory, Greedy, Trees assignpaths USACO 2020 February Contest, Platinum Batch 31
rmq N/A Tags: Data Structures, Greedy rmq NOI 2017 Batch 31
relaymarathon N/A Tags: Brute Force, Graph Theory relaymarathon NOI 2020 Qualification Batch 31
container N/A Tags: Square Root Decomposition Shipping Containers POI 2017 Round 2 Day 2 Q1 Batch 31
tour N/A Tags: Bitmask, Dynamic Programming, Graph Theory tour NOI 2011 Batch 31
bottle N/A Tags: Dynamic Programming, Graph Theory, Trees Bottle Dunjudge Archive Batch 30
magicstring N/A Tags: Syntax magicstring AOI 2023 Day 2 (shoryu386) Batch 30
beautifulbrackets N/A Tags: Dynamic Programming Beautiful Bracket Sequence Codeforces 1264D1 Batch 30
arraypartition N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window arraypartition Codeforces 487B Batch 30
ants N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees ants Dunjudge Archive Interactive 30
noodlestore N/A Tags: Data Structures noodlestore HCI EC³ Beginner Contest (WH8) Batch 30
numbergame N/A Tags: Binary Search numbergame ANDSS Welcome 2023 (Day 2) (shoryu386) Batch 30
mushroomfarm N/A Tags: Binary Search, Dynamic Programming Jianzhi’s Mushroom Farm RI NOI Selection Test 2017 Batch 30
doubleflip N/A Tags: Adhoc Double Flip TROC 24 (errorgorn) Batch 30
exoticplants N/A Tags: Graph Theory Exotic Plants Luogu P4568 [JLOI2011] Batch 30
selectingintervals N/A Tags: Binary Search, Dynamic Programming selectingintervals Codeforces 1055E Batch 30
flamethrower_ex N/A Tags: Data Structures, Line Sweep/Sliding Window flamethrower_ex RI November Course 2023 Diagnostic Test (Potato3218) Batch 29
jumping2 N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Jumping Dunjudge Archive Batch 29
mining N/A Tags: Graph Theory mining Dunjudge Archive Batch 29
attractions N/A Tags: Greedy Attractions DDC23 Final (shoryu386) Batch 29
baseplans N/A Tags: Adhoc Base Plans UWCOI 2020 (socho, astoria, kimbj0709) Batch 29
merchant_o N/A Tags: Dynamic Programming, Slope Trick Merchant Otter Dec Course 2020 BAPS (myrcella) Batch 29
lunchtime N/A Tags: Adhoc Lunchtime ARC 162A Batch 29
shuttlerun N/A Tags: Greedy shuttlerun AGC 025C Batch 29
safety N/A Tags: Dynamic Programming, Slope Trick Safety NOI 2018 Batch 29
partitiongame N/A Tags: Data Structures, Dynamic Programming Partition Game Codeforces 1527E Batch 29
mate N/A Tags: Graph Theory mate RSA Fun Contest (errorgorn) Batch 29
binomial N/A Tags: Math binomial Dunjudge Archive Batch 29
celldivision N/A Tags: Binary Search, Math celldivision Random Idea (shoryu386) Batch 29
dice N/A Tags: Math Dice Dec Course 2021 BAPS (origami100, dillion) Batch 29
plagia N/A Tags: Data Structures plagia December Course 2018 Advanced Final Contest Batch 29
equals N/A Tags: Graph Theory equals ARC 097 Batch 29
dynamicdag N/A Tags: Graph Theory dynamicdag December Course 2023 Elementary Final Contest (Tyx2019) Batch 29
sonya N/A Tags: Dynamic Programming, Slope Trick Sonya and Problem Wihtout A Legend Codeforces 713C Batch 29
cave N/A Tags: Binary Search cave IOI 2013 Interactive 28
bridge_apio15 N/A Tags: Data Structures Palembang Bridges APIO 2015 Batch 28
SameMapInTheRpgWorld N/A Tags: Syntax samemap ABC 300B Batch 28
mathtest N/A Tags: Math, Syntax mathtest Dunjudge Archive Batch 28
sequence_apio N/A Tags: Dynamic Programming Split the sequence APIO 2014 Batch 28
bananafever N/A Tags: Dynamic Programming, Graph Theory, Trees bananafever Dunjudge Archive Batch 28
sniper N/A Tags: Math sniper ANDSS Coding Head Sel 2023 Duel (shoryu386) Batch 28
fourbuckets N/A Tags: Adhoc, Math Four Buckets Educational Round 6 (oolimry) Batch 28
stringsofimpurity N/A Tags: Binary Search stringsofimpurity AtCoder Batch 28
feelgood N/A Tags: Dynamic Programming, Math Feel Good Luogu P2602 Batch 28
lratio N/A Tags: Data Structures, Dynamic Programming L + Ratio Алгоритм 2022 Batch 28
horses N/A Tags: Data Structures, Math horses IOI 2015 Interactive 28
removeelements N/A Tags: Binary Search, Data Structures removeelements Codeforces Round #668 Batch 28
bucketstacking N/A Tags: Adhoc, Greedy Bucket Stacking RI-HCI-NUSH NOI Selection Test 2021 (oolimry) Batch 28
hunter N/A Tags: Graph Theory, Trees Hunter Dunjudge Archive (bensonlzl) Interactive 28
woodcutter N/A Tags: Brute Force, Data Structures Woodcutter Codeforces 527C (modified) Interactive 28
countingagain N/A Tags: Dynamic Programming, Math Counting Again ARC 104D Batch 28
jams N/A Tags: Data Structures Jams Algorithm Class Mini-Contest 8 Batch 28
mothertounge N/A Tags: Graph Theory, Joke Mother Tounge Hello 2024 (oolimry) Batch 28
rolling N/A Tags: Dynamic Programming, Graph Theory, Trees Rolling Dunjudge Archive Batch 28
lampposts N/A Tags: Binary Search lampposts Dunjudge Archive Interactive 27
pancake N/A Tags: Brute Force, Graph Theory pancake NOI 2012 Batch 27
curtains N/A Tags: Data Structures, Divide and Conquer Curtains NOI 2023 Finals (bensonlzl) Batch 27
segmenttreebeats N/A Tags: Data Structures My Soul, Your Beats CF 1791F Batch 27
mathtree N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Math Tree SGP Sparring 2021 (lovemathboy) Batch 27
reopening N/A Tags: Constructive Algorithms, Graph Theory, Trees Reopening Shop Dec Course 2022 BAPS (errorgorn, Halogen) Batch 27
moosic N/A Tags: Data Structures moosic Codeforces Round #386 Batch 27
factories N/A Tags: Data Structures, Divide and Conquer, Graph Theory, Trees factories JOI 2014 Open Interactive 27
radioactive N/A Tags: Divide and Conquer, Dynamic Programming radioactive NOI 2015 Batch 27
hld N/A Tags: Data Structures, Graph Theory, Trees hld LOJ P139 Batch 27
packingducks N/A Tags: Brute Force, Dynamic Programming packingducks Classic Problem Batch 27
toll N/A Tags: Data Structures, Dynamic Programming toll BOI 2017 Batch 27
republiccity N/A Tags: Graph Theory Republic City RI Nov Sel 2020 (JustAWallaby) Batch 27
sailor N/A Tags: Graph Theory sailor CPSPC 2010 Batch 27
dna N/A Tags: Dynamic Programming DNA APIO 2008 Batch 26
bombing N/A Tags: Graph Theory bombing Dunjudge Archive Batch 26
puttingstrings N/A Tags: Constructive Algorithms, Graph Theory puttingstrings RI-HCI December Course Selection 2020 (rs) Batch 26
hellokitty N/A Tags: Binary Search, Data Structures, Math hellokitty Dunjudge Archive Batch 26
guessarray N/A Tags: Adhoc 4sadfaces Guessing an Array Dec Course 2020 BAPS (zaneyu) Interactive 26
umbrella N/A Tags: Dynamic Programming umbrella USACO Silver Dec 2011 Batch 26
globalwarming_ceoi N/A Tags: Data Structures, Dynamic Programming Global warming CEOI 2018 Batch 26
swap N/A Tags: Graph Theory, Trees Swapping Cities APIO 2020 Interactive 26
mountain N/A Tags: Data Structures Mountain IOI 2005 Batch 26
removeedges N/A Tags: Graph Theory removeedges Atcoder Batch 26
maximumtriangle N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Maximum Triangle CF Edu Round 11 F Batch 26
triusis N/A Tags: Data Structures, Dynamic Programming Rabbit Carrot Lithuanian Olympiad in Informatics 2019 Batch 25
boring N/A Tags: Dynamic Programming boring Dunjudge Archive Batch 25
baseplans_ex N/A Tags: Data Structures baseplans_ex UWCOI 2020 (socho, astoria, kimbj0709) Batch 25
vouchers N/A Tags: Dynamic Programming vouchers Dunjudge Archive Batch 25
lemonadestand N/A Tags: Greedy lemonadestand Dunjudge Archive Batch 25
pavement N/A Tags: Constructive Algorithms, Greedy Painting Pavements HCI December Course Selection 2021 (pavement) Batch 25
smurfberries N/A Tags: Binary Search smurfberries All-Ukrainian School Olympiad in Informatics 2011 Batch 25
chickensoup N/A Tags: Data Structures, Math chickensoup ABC 256F Batch 25
findinggrass_ex N/A Tags: Joke Helping an ex-cs student touch grass while blindfolded with my insane programming skills in another world April Fools 2023 (siewjh) Batch 25
mergeguessproblem N/A Tags: Joke Merge Guess Problem Hello 2024 (oolimry) Batch 25
ducktransport N/A Tags: Binary Search, Greedy ducktransport ANDSS Coding Head Sel 2023 Duel (bron, shoryu386) Batch 25
merchant N/A Tags: Binary Search, Dynamic Programming, Graph Theory Travelling Merchant APIO 2017 Batch 25
deciphering_zane N/A Tags: Explicitly Excluded (from IOI), Joke Dceiprhenig Zane April Fools 2023 (Xiaoyang, leyi, ecxx, tux, Craftless, Gladius3482) Batch 24
collectmushrooms5 N/A Tags: Greedy collectmushrooms5 Dunjudge Archive Batch 24
snakesnack N/A Tags: Dynamic Programming, Greedy snakesnack Codeforces 1239E Batch 24
funfair N/A Tags: Dynamic Programming, Graph Theory, Trees Funfair Educational Round 5 (rs) Batch 24
nostatement N/A Tags: Joke, Math nostatement Dunjudge Archive Batch 24
rabbitpainting N/A Tags: Greedy rabbitpainting Dunjudge Archive (bensonlzl) Batch 24
inversemax N/A Tags: Bitmask, Dynamic Programming inversemax Educational Round 3 (errorgorn) Batch 24
truck N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Math, Trees truck NOI 2021 Qualification (huajun) Batch 24
fencing N/A Tags: Data Structures, Line Sweep/Sliding Window, Square Root Decomposition Fencing RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 24
index N/A Tags: Binary Search, Data Structures index COCI 2020/2021 Contest 6 Batch 24
cakerun N/A Tags: Data Structures Bowen's Cake Run December Course 2019 Advanced Final Contest (rs) Batch 24
arcade N/A Tags: Adhoc, Data Structures, Dynamic Programming arcade NOI 2020 Finals (pwypeanut) Batch 24
triangles N/A Tags: Graph Theory, Square Root Decomposition Counting Triangles Classic Problem Batch 24
robots N/A Tags: Binary Search, Greedy robots IOI 2013 Interactive 24
fitnesscorner N/A Tags: Divide and Conquer, Graph Theory, Trees Fitness Corner Codeforces 321C Batch 24
funnynim N/A Tags: Explicitly Excluded (from IOI), Math funnynim IMO Shortlist 2015 Batch 24
lppfnlcst N/A Tags: Binary Search, Data Structures Lazy Propagation Persistant Fat Nodes Li Chao Segment Tree Educational Round 1 (errorgorn) Batch 24
naan N/A Tags: Greedy, Math naan JOI 2018/2019 Spring Camp Batch 24
boxhaskey N/A Tags: Graph Theory Box Has Key HCI-RI 2020 May Contest (bensonlzl) Batch 23
spy N/A Tags: Data Structures, Graph Theory, Trees spy 2013 IOI Japan National Team Selection Test Day 2 Batch 23
gerrymandering N/A Tags: Dynamic Programming Gerrymandering Dec Course 2021 BAPS (beepbeepsheep) Batch 23
newjeans N/A Tags: Divide and Conquer, Dynamic Programming Bob's New Jeans Codeforces 868F Batch 23
fertile N/A Tags: Binary Search, Data Structures, Dynamic Programming fertile RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 23
nombor N/A Tags: Binary Search, Brute Force Nombor ABC 246D Batch 23
mememagic N/A Tags: Dynamic Programming mememagic Dunjudge Archive Batch 23
firecracker N/A Tags: Data Structures, Greedy firecracker CNY Contest 2019 Batch 23
createnumber N/A Tags: Greedy createnumber ABC 257E Batch 23
gohcart N/A Tags: Data Structures, Dynamic Programming, Graph Theory Goh Cart Codeforces 1715E (f0restf1re) Batch 23
openingshop N/A Tags: Greedy Opening Shop Dec Course 2021 BAPS (Halogen) Batch 23
pillars N/A Tags: Data Structures Pillars RI December Course Selection Test 2021 (rs) Batch 23
abc_apio23 N/A Tags: Constructive Algorithms, Divide and Conquer, Information Theory, Joke Alice, Bob and Circuit APIO 2023 Batch 23
beacon N/A Tags: Dynamic Programming, Math Beacon Towers Grand Prix of Seoul Batch 23
strawberry N/A Tags: Data Structures, Dynamic Programming Speedy Strawberries 2020 CNY (shenxy13) Batch 22
OrXor N/A Tags: Bitmask, Syntax orxor ABC 197C Batch 22
catnames N/A Tags: Math catnames RI/RJC NOI Selection Test 2016 Batch 22
mrbeast N/A Tags: Data Structures, Graph Theory, Trees mrbeast Codeforces Batch 22
village N/A Tags: Graph Theory, Greedy, Trees village BOI 2020 Batch 22
rabbitbars N/A Tags: Binary Search, Data Structures, Divide and Conquer, Dynamic Programming rabbitbars Dunjudge Archive (bensonlzl) Batch 22
historical N/A Tags: Square Root Decomposition Historical JOI 2013/2014 Batch 22
rabbitmeeting N/A Tags: Adhoc, Greedy RabbitMeeting December Course 2018 Advanced Final Contest Batch 22
burger N/A Tags: Greedy burger Code Jam to I/O 2018 for Women Batch 22
mice N/A Tags: Graph Theory mice Dunjudge Archive Batch 22
chocolate N/A Tags: Dynamic Programming chocolate Dunjudge Archive Batch 22
replacingpavement N/A Tags: Adhoc, Graph Theory, Trees Replacing Pavement December Course 2023 Advanced Final Contest (asbx, back2square1) Batch 22
deciphering_zane_4 N/A Tags: Joke Deciphering Zane (IV) Hello 2024 (ecxx) Interactive 22
prefixgcd N/A Tags: Adhoc, Brute Force, Math prefixgcd Dec Course 2021 BAPS (jiahng) Batch 22
repairs N/A Tags: Data Structures, Graph Theory, Trees repairs Dunjudge Archive Batch 22
pipes N/A Tags: Graph Theory Pipes CEOI 2015 Batch 22
artswap N/A Tags: Data Structures artswap HCI NOI Selection Retest 2020 (bensonlzl) Interactive 22
candies2 N/A Tags: Greedy candies2 ARC 064A Batch 22
pairofballs N/A Tags: Data Structures Pair of Balls ABC 216D Batch 22
berlandtaxi N/A Tags: Data Structures Berland.Taxi NEERC 2017 Southern Subregional Contest Batch 21
build N/A Tags: Graph Theory, Greedy build ABC 065D Batch 21
nian N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Nian 2020 CNY (oolimry) Batch 21
monochromecat N/A Tags: Graph Theory, Trees monochromecat ARC 097 Batch 21
removalcosts N/A Tags: Adhoc, Greedy, Math Removal Costs Dec Course 2022 BAPS (maomao90) Batch 21
rating N/A Tags: Adhoc, Math Rating Changes Dec Trg 2019 (Elementary) Batch 21
wabbitosu N/A Tags: Adhoc, Data Structures, Greedy Wabbit osu!taiko HCI December Course Selection 2021 (bensonlzl) Batch 21
duckwar N/A Tags: Binary Search, Greedy, Math duckwar Anderson Fluff Contest (shoryu386) Batch 21
hotspot N/A Tags: Graph Theory hotspot NOI 2017 Batch 21
anutforajaroftuna N/A Tags: Dynamic Programming, Greedy A Nut For A Jar Of Tuna Codeforces 730J Batch 21
visitingsingapore N/A Tags: Dynamic Programming Visiting Singapore NOI 2020 Prelims Batch 21
rabbitroad N/A Tags: Binary Search, Graph Theory, Greedy, Trees RabbitRoad RI-HCI December Course Selection 2019 (bensonlzl) Batch 21
power N/A Tags: Dynamic Programming, Graph Theory, Trees power JOI Batch 21
infiniteloop N/A Tags: Graph Theory Infinite Looping Sequence 2017 RI Dec Course Sel (pwypeanut) Batch 21
police N/A Tags: Dynamic Programming, Graph Theory Police Station CPSPC 2017 Batch 20
trivialmaths N/A Tags: Explicitly Excluded (from IOI), Math trivialmaths Valentines Contest 2021 (errorgorn) Interactive 20
football N/A Tags: Dynamic Programming football Anderson Fluff Contest (LCJLY) Batch 20
arrangetoys N/A Tags: Graph Theory, Math Arranging Toy Displays AGC 016D Batch 20
blackmagic N/A Tags: Bitmask, Brute Force Black Magic USACO 2023 January Contest, Bronze Batch 20
movingbasement N/A Tags: Binary Search, Greedy Moving Basement Codeforces 1623C Batch 20
solarstorm N/A Tags: Graph Theory, Line Sweep/Sliding Window, Trees Solar Storm NOI 2020 Prelims Batch 20
jumps N/A Tags: Data Structures, Greedy Rainforest Jumps APIO 2021 (bensonlzl) Interactive 20
rangedeleting N/A Tags: Line Sweep/Sliding Window Range Deleting Codeforces 1167E Batch 20
wall N/A Tags: Data Structures wall IOI 2014 Interactive 20
collectmushrooms4 N/A Tags: Data Structures, Dynamic Programming collectmushrooms4 Dunjudge Archive Batch 20
shoes N/A Tags: Data Structures, Greedy Arranging Shoes IOI 2019 (Day 1) Interactive 20
downbad N/A Tags: Dynamic Programming downbad Luogu P1806 Batch 20
volcanic N/A Tags: Binary Search, Graph Theory Volcanic Travel ANDSS Welcome 2023 (Day 2) (shoryu386) Batch 20
aliens N/A Tags: Data Structures aliens Dunjudge Archive Batch 20
laughter N/A Tags: Binary Search, Data Structures, Line Sweep/Sliding Window laughter Educational Codeforces Round 27 Batch 20
molecules N/A Tags: Adhoc, Line Sweep/Sliding Window Detecting Molecules IOI 2016 Interactive 20
rainbowroad N/A Tags: Bitmask, Dynamic Programming, Graph Theory, Trees Rainbow Road HCI-RI 2020 May Contest (bensonlzl) Batch 20
invasion N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Line Sweep/Sliding Window, Trees invasion Dunjudge Archive Batch 20
dreaming N/A Tags: Graph Theory dreaming IOI 2013 Interactive 20
orangecollector N/A Tags: Bitmask, Data Structures, Dynamic Programming Orange Collector RI-HCI December Course Selection 2019 (rs) Batch 19
strangedevice N/A Tags: Data Structures, Math Strange Device APIO 2019 Batch 19
skyscraper_apio15 N/A Tags: Graph Theory, Square Root Decomposition Jakarta Skyscrapers APIO 2015 Batch 19
summarizing2021 N/A Tags: Explicitly Excluded (from IOI) 🗿🗿🗿 Hello 2022 (errorgorn) Interactive 19
bigbinarytree N/A Tags: Greedy Big Binary Tree RI-HCI Final Contest 2022 (bensonlzl) Batch 19
subsetmex N/A Tags: Adhoc Subset Mex EGOI 2022 Day 1 Batch 19
jumper N/A Tags: Brute Force, Data Structures, Line Sweep/Sliding Window Manhattan Jumper HCI-NUSH NOI Selection 2022 (errorgorn) Batch 19
island_boi N/A Tags: Graph Theory, Greedy, Trees island BOI 2022 Batch 19
qualityinspections N/A Tags: Data Structures qualityinspections ANDSS Coding Head Sel 2023 Duel (penguin133, shoryu386) Batch 19
learning N/A Tags: Dynamic Programming learning Luogu P1802 Batch 19
findandprevent N/A Tags: Graph Theory, Trees Find and Prevent Tuymaada 2021 Batch 19
everyonewinstherace N/A Tags: Binary Search, Greedy everyonewinstherace December Course 2023 Elementary Final Contest (oolimry) Batch 19
goodgame N/A Tags: Explicitly Excluded (from IOI), Math goodgame ARC 072D Batch 19
rarwall N/A Tags: Data Structures rarwall Dunjudge Archive Interactive 19
sunshine N/A Tags: Dynamic Programming Sunshine RI Novcourse Final Contest 2023 (zixuan, ryangohca) Batch 19
catteams N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming catteams RI/RJC NOI Selection Test 2016 Batch 19
colour N/A Tags: Data Structures colour December Course 2018 Elementary Final Contest Batch 19
battleship N/A Tags: Bitmask, Constructive Algorithms, Divide and Conquer Battleship HCI-NUSH NOI Selection 2022 (errorgorn) Interactive 19
closedpath N/A Tags: Graph Theory, Trees closedpath Dunjudge Archive Batch 19
island N/A Tags: Graph Theory, Math, Trees Island NOI 2018 Prelims Batch 19
coingame N/A Tags: Adhoc, Explicitly Excluded (from IOI) coingame NTST 2015 Batch 19
mamamintaplusa N/A Tags: Greedy mama MINta PLUSa Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 19
robobear N/A Tags: Graph Theory The Maze of RoboBear Tuymaada 2021 Batch 19
interestring N/A Tags: Dynamic Programming, Math interestring RI-HCI December Course Selection 2020 (cstuart) Batch 19
more_lca N/A Tags: Dynamic Programming, Graph Theory, Trees More LCA Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 19
gap N/A Tags: Information Theory, Math Gap APIO 2016 Interactive 19
magicboard N/A Tags: Adhoc, Math magicboard AOI 2023 Day 2 (shoryu386) Batch 19
magicspell N/A Tags: Line Sweep/Sliding Window magicspell AOI 2023 Day 2 (shoryu386) Batch 19
motest N/A Tags: Math MOtest Valentine's Day Contest 2023 (Tyx2019) Batch 19
potatoqueue N/A Tags: Data Structures potatoqueue Dunjudge Archive Interactive 19
streakmanipulation N/A Tags: Binary Search, Dynamic Programming streakmanipulation The 2nd Universal Cup. Stage 12: Hefei Batch 19
christmasturkeyfarm N/A Tags: Data Structures Christmas Turkey Farming Educational Round 2 (dillion) Batch 18
scrivener N/A Tags: Data Structures Crayfish scrivener IOI 2012 Interactive 18
bubblesort N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Bubble Sort Educational Round 4 (jamessng, zaneyu, oolimry) Batch 18
acorns N/A Tags: Data Structures acorns MCO 2016 Batch 18
cards N/A Tags: Data Structures cards Dunjudge Archive Batch 18
flowering N/A Tags: Data Structures flowering COCI 2008/2009 Batch 18
mercurypoisoning N/A Tags: Graph Theory Mercury Poisoning UWCOI 2020 (socho, astoria, kimbj0709) Batch 18
convention N/A Tags: Binary Search, Greedy convention USACO 2018 December Silver Batch 18
qualitytime N/A Tags: Dynamic Programming Quality Time Codeforces 922E Batch 18
rabbittolls N/A Tags: Graph Theory rabbittolls Dunjudge Archive Batch 18
reachability N/A Tags: Dynamic Programming, Graph Theory reachability Classic Problem Batch 18
divsum N/A Tags: Math Divisor Sum Educational Round 1 (errorgorn) Batch 18
happyarrays N/A Tags: Dynamic Programming, Line Sweep/Sliding Window Happy Arrays Classic Problem (penguin133) Batch 18
matsuri N/A Tags: Dynamic Programming matsuri AOI 2023 Day 1 (shoryu386) Batch 18
roots N/A Tags: Data Structures, Graph Theory, Trees roots Codeforces 695E Batch 18
centroid N/A Tags: Brute Force, Graph Theory Centroid Dunjudge Archive Batch 18
sandcity N/A Tags: Dynamic Programming sandcity Random Idea (shoryu386, Reverberate) Batch 18
escalation N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees escalation December Course 2019 Advanced Final Contest (bensonlzl) Batch 18
gfriendtree N/A Tags: Data Structures, Graph Theory, Trees The 200000 Girlfriends Who Really, Really, Really, Really, Really Love Zane And His Tree Luogu P3313 Batch 18
secret N/A Tags: Divide and Conquer, Information Theory Secret JOI Open 2014 Interactive 18
guessproblem3_ex N/A Tags: Joke Guess Problem 3 (Extended) Hello 2024 (ecxx) Batch 18
findinggrass N/A Tags: Data Structures, Greedy Finding Grass Dec Course 2022 BAPS (hmm) Batch 17
doubletrip N/A Tags: Brute Force, Constructive Algorithms, Graph Theory Double Trip Codeforces 1343E Batch 17
placingrouters N/A Tags: Greedy Placing Routers Codeforces 1764E Batch 17
lopov N/A Tags: Data Structures lopov COCI 2013/2014 Batch 17
melons_joig N/A Tags: Binary Search, Dynamic Programming Melons JOIG 2021/2022 Batch 17
delivery N/A Tags: Bitmask, Dynamic Programming, Graph Theory delivery Dunjudge Archive Batch 17
penghulu N/A Tags: Dynamic Programming, Graph Theory, Trees Penghulu MCO 2016 Batch 17
cycling N/A Tags: Graph Theory, Trees cycling Dunjudge Archive Batch 17
dragonfly N/A Tags: Data Structures, Graph Theory, Trees dragonfly NOI 2022 Qualification (bensonlzl) Batch 17
sardines N/A Tags: Data Structures, Dynamic Programming sardines RI NOI Selection Test 2014 Batch 17
departure N/A Tags: Data Structures, Greedy departure NOI 2021 Qualification Batch 17
pplow N/A Tags: Line Sweep/Sliding Window pplow Classic Problem Batch 17
stoning N/A Tags: Meet in the Middle stoning RICP Diagnostic Test 2024 (Potato3218) Batch 17
youtubealgo N/A Tags: Data Structures, Dynamic Programming youtubealgo Dec Course Elem DP 1 Contest (shoryu386) Batch 17
planning N/A Tags: Graph Theory, Greedy, Trees Company Planning TOKI Open 2014 Batch 17
goodmorning N/A Tags: Graph Theory Good Morning ISC 2020 practice (errorgorn) Batch 17
badtree N/A Tags: Binary Search, Data Structures badtree RI-HCI December Course Selection 2019 (bensonlzl) Batch 17
cloudcomputing N/A Tags: Dynamic Programming Cloud computing CEOI 2018 Batch 17
jjooii2 N/A Tags: Adhoc jjooii2 JOI 2020 Final Round Batch 16
rebuild N/A Tags: Constructive Algorithms, Graph Theory, Greedy rebuild RI-HCI-NUSH NOI Selection Test 2021 (shenxy13) Interactive 16
arcwrecker2 N/A Tags: Adhoc, Data Structures arcwrecker2 ARC119C Batch 16
distribution N/A Tags: Bitmask, Constructive Algorithms, Meet in the Middle Distribution Codechef January Cook-Off 2021 Batch 16
routes N/A Tags: Adhoc, Graph Theory routes Dunjudge Archive Batch 16
outing N/A Tags: Data Structures Outing Educational Round 10 (Goodbye cstuart and kai824) (kai824) Batch 16
intercastellar N/A Tags: Adhoc Intercastellar JOI 2022 Final Round Batch 16
duckwalk N/A Tags: Binary Search, Data Structures, Dynamic Programming duckwalk Codeforces 76F Batch 16
plantingpotatoes N/A Tags: Adhoc, Binary Search Planting Potatoes ABC 300F Batch 16
midas N/A Tags: Graph Theory, Trees Midas POI 2017 Round 3 Day 1 Q1 Batch 16
supertrees N/A Tags: Adhoc, Constructive Algorithms, Graph Theory Connecting Supertrees IOI 2020 Interactive 16
shikandgame N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window shikandgame AGC 007 Batch 16
1402_2 N/A Tags: Graph Theory, Joke 1402_2 April Fools 2023 (blackscreen1) Batch 16
badknapsack N/A Tags: Brute Force, Dynamic Programming badknapsack Educational Round 3 (errorgorn) Batch 16
collaboration N/A Tags: Data Structures, Graph Theory, Trees Collaboration December Course 2019 Advanced Final Contest (0rang3) Interactive 16
orangeroad N/A Tags: Data Structures, Line Sweep/Sliding Window orangeroad Educational Round 9 (jamessng, jamielim) Batch 16
destroy N/A Tags: Dynamic Programming, Graph Theory, Trees Destroy RI-HCI NOI Selection Test 2019 Batch 16
archaeologist N/A Tags: Adhoc archaeologist NOI 2021 Finals Interactive 16
colorgraph N/A Tags: Graph Theory colorgraph uwu (errorgorn) Batch 16
rabbitmilk N/A Tags: Greedy rabbitmilk Dunjudge Archive Batch 16
cp2booksales N/A Tags: Line Sweep/Sliding Window cp2booksales Dunjudge Archive Batch 16
orchard2 N/A Tags: Dynamic Programming orchard2 RI NOI Selection Test 2015 Batch 16
domine N/A Tags: Bitmask, Dynamic Programming domine COCI 2013/2014 Batch 16
miracleflover N/A Tags: Joke Miracle Flover Hello 2024 (ryangohca, ecxx, leyi) Interactive 16
excombo N/A Tags: Dynamic Programming, Greedy EX Combo RSA Fun Contest (oolimry) Batch 16
selfpermutation N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming selfpermutation TOKI KSN Day 2 Batch 16
askonegetonefree N/A Tags: Binary Search, Dynamic Programming AskOneGetOneFree NOI 2015 Interactive 15
radiance N/A Tags: Square Root Decomposition radiance RSA Fun Contest (oolimry) Batch 15
kickingshoes N/A Tags: Data Structures, Greedy, Math Kicking Shoes Educational Round 4 (maomao90) Batch 15
rabbitbridges N/A Tags: Binary Search, Graph Theory Rabbit Bridges Educational Round 5 (oolimry) Batch 15
events N/A Tags: Data Structures, Greedy events BOI 2022 Batch 15
minimetro N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window Minimetro HCI December Course Selection 2021 (huangqr) Batch 15
paint_apio N/A Tags: Adhoc, Line Sweep/Sliding Window, Square Root Decomposition paint_apio APIO 2020 Interactive 15
lambsrespite N/A Tags: Data Structures Lamb's Respite XXII Open Cup. Grand Prix of Korea Batch 15
sawmills N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Two Sawmills CEOI 2004 Batch 15
catgameshow N/A Tags: Data Structures catgameshow RI/RJC NOI Selection Test 2016 Batch 15
bichrome N/A Tags: Graph Theory, Math, Trees bichrome Atcoder Batch 15
istj N/A Tags: Data Structures, Trees ISTJ 2020 CNY, Classic Problem (0rang3, shenxy13) Batch 15
segmentoperations N/A Tags: Data Structures, Dynamic Programming, Math Segment Operations Codeforces 1743F Batch 15
schedule N/A Tags: Dynamic Programming, Graph Theory schedule HCI NOI Selection Test 2014 Batch 15
rabbitlineup N/A Tags: Divide and Conquer, Dynamic Programming rabbitlineup Dunjudge Archive Batch 15
math N/A Tags: Brute Force, Math Primes Up April Fools Contest 2020 (shenxy13) Batch 15
valley N/A Tags: Divide and Conquer, Graph Theory, Trees Alpine valley BOI 2019 Day 1 Batch 15
roadtrip N/A Tags: Dynamic Programming, Graph Theory, Trees Road Trip Classic Problem Batch 15
squarerect N/A Tags: Adhoc, Information Theory Square or Rectangle? NOI 2019 Prelims (pwypeanut) Interactive 15
inequality2 N/A Tags: Adhoc, Constructive Algorithms inequality2 Dec Course 2021 BAPS (zaneyu) Batch 15
hipercijevi N/A Tags: Graph Theory hipercijevi COCI 2012/2013 Batch 15
stoningame N/A Tags: Math stoningame Valentine's Day Contest 2022 (maomao90) Batch 15
fireworks N/A Tags: Dynamic Programming, Graph Theory, Slope Trick, Trees Fireworks APIO 2016 Batch 15
fractional_knapsack N/A Tags: Greedy fractional_knapsack Classic Problem Batch 15
garden_ioi05 N/A Tags: Brute Force, Dynamic Programming Garden IOI 2005 Batch 15
binarylock N/A Tags: Bitmask, Meet in the Middle binarylock Codeforces 1257F Batch 15
polyomino N/A Tags: Syntax polyomino ABC 322D Batch 15
surnames N/A Tags: Dynamic Programming, Graph Theory, Square Root Decomposition, Trees Surnames 2020 CNY (errorgorn) Batch 15
experimentexplodeexpel N/A Tags: Explicitly Excluded (from IOI), Math Experiment. Explode. Expel. Dunjudge Archive Batch 15
guessproblem4_ex N/A Tags: Joke Guess Problem 4 (Extended) Hello 2024 (ryangohca, ecxx) Interactive 14
towers_noi N/A Tags: Constructive Algorithms, Data Structures, Greedy Towers NOI 2022 Finals (ngyupeng6) Batch 14
medianontree N/A Tags: Dynamic Programming, Graph Theory, Trees Median on Tree EOI 2023 Day 2 Batch 14
badchef N/A Tags: Graph Theory Bad Chef NUS CS3233 2020 (Kattis) Batch 14
mulgogi N/A Tags: Data Structures Mulgogi Codeforces 817F Batch 14
pandanumbers N/A Tags: Data Structures, Meet in the Middle Numbers Dunjudge Archive Batch 14
bossbattle N/A Tags: Brute Force, Data Structures Boss Battle Classic Problem in China Batch 14
guessproblem2 N/A Tags: Explicitly Excluded (from IOI), Joke Guess Problem 2 April Fools 2023 (ryangohca) Batch 14
christmastree N/A Tags: Graph Theory, Trees Christmas Tree Educational Round 2 (errorgorn, oolimry) Batch 14
more_lca2 N/A Tags: Graph Theory, Trees More LCA 2 Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 14
hacker N/A Tags: Data Structures, Greedy, Line Sweep/Sliding Window hacker BOI 2015 Batch 14
pandaski N/A Tags: Data Structures, Dynamic Programming pandaski NOI 2016 Batch 14
streetlamps N/A Tags: Data Structures, Divide and Conquer Street Lamps APIO 2019 Batch 14
divsum_dec18 N/A Tags: Math Divsum RI Deccourse 2018 Selection Test (eutroph) Batch 14
bridges_apio19 N/A Tags: Graph Theory, Square Root Decomposition Bridges APIO 2019 Batch 14
datacenters N/A Tags: Adhoc Data Centers EGOI 2022 Day 2 Batch 14
ragingthunder N/A Tags: Data Structures Raging Thunder Codeforces Batch 14
cousin N/A Tags: Graph Theory, Trees cousin Dunjudge Archive Interactive 14
palindromicfever N/A Tags: Dynamic Programming, Math Palindromic Fever ANDSS Welcome 2023 (Day 2) (shoryu386) Batch 14
uniquepath N/A Tags: Graph Theory uniquepath AGC38D Batch 14
garden_ioi08 N/A Tags: Dynamic Programming Linear Garden IOI 2008 Batch 14
mrbeancurd N/A Tags: Dynamic Programming mrbeancurd HCI Be A Problem Setter (BAPS) Contest 2017 (jzh, caffeine) Batch 14
duels N/A Tags: Adhoc, Data Structures duels Educational Round 9 (maomao90, jamessng) Batch 14
colourblind N/A Tags: Graph Theory colourblind HCI NOI Selection Retest 2020 (bensonlzl) Interactive 14
seedflare N/A Tags: Information Theory Seed Flare SGP Sparring 2021 (lovemathboy) Interactive 14
camels N/A Tags: Data Structures Guessing Camels NWERC 2015 Batch 14
mergers N/A Tags: Adhoc, Data Structures, Graph Theory, Trees mergers JOI Batch 13
prisoners N/A Tags: Adhoc, Graph Theory, Information Theory prisoners APIO 2014 Mock Contest Communication 13
aliens_ioi N/A Tags: Binary Search, Data Structures, Dynamic Programming Aliens IOI 2016 Interactive 13
mathexam N/A Tags: Math, Syntax Math Exam RICP Diagnostic Test 2024 (Potato3218) Batch 13
flipthat N/A Tags: Dynamic Programming, Math Flip That Codeforces 1630D Batch 13
seagame N/A Tags: Dynamic Programming, Graph Theory, Trees seagame ABC 218G Batch 13
zoo N/A Tags: Dynamic Programming Zoo ABC 228H Batch 13
segmenttree3 N/A Tags: Data Structures, Line Sweep/Sliding Window segmenttree3 Dec Course 2021 Intermediate Contest 4 (Data Structures III) (errorgorn, oolimry) Batch 13
fabric N/A Tags: Data Structures, Dynamic Programming fabric NOI 2016 Batch 13
torturingaccountant N/A Tags: Greedy, Syntax torturingaccountant RICP Diagnostic Test 2024 (RandomPerson, Tyx2019) Batch 13
joke N/A Tags: Graph Theory Joke Dec Trg 2019 (Elementary) Batch 13
movingboxes N/A Tags: Data Structures, Greedy movingboxes Codeforces 1030F Batch 13
selfdefence N/A Tags: Dynamic Programming Self Defence TOKI KSN Day 1 Batch 13
attention N/A Tags: Bitmask, Dynamic Programming Attention Codeforces Beta Round 11D Batch 13
edgeflip N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Edge Flipping Educational Round 4 (jamessng) Batch 13
specialmultiset N/A Tags: Data Structures specialmultiset Codeforces 981G Batch 13
friendlyrooks N/A Tags: Brute Force, Greedy Friendly Rooks 2022 December Course Diagnostic Test (errorgorn) Batch 13
straight N/A Tags: Bitmask, Dynamic Programming Pure Straight ARC 126 Batch 13
streets N/A Tags: Data Structures, Graph Theory, Trees One-Way Streets CEOI 2017 Batch 13
smokeflower N/A Tags: Data Structures, Divide and Conquer, Line Sweep/Sliding Window smokeflower Classic Problem Batch 13
shuffling N/A Tags: Dynamic Programming Shuffling ARC 065D Batch 13
personalspace N/A Tags: Binary Search, Dynamic Programming, Line Sweep/Sliding Window personalspace December Course 2018 Elementary Final Contest Batch 13
bracketflip N/A Tags: Data Structures, Line Sweep/Sliding Window, Math bracketflip Dec Course 2020 BAPS (pavement) Batch 13
semiconnected N/A Tags: Graph Theory semiconnected Dunjudge Archive Batch 13
blanko N/A Tags: Data Structures, Greedy blanko Dunjudge Archive Batch 13
boxes2 N/A Tags: Data Structures, Dynamic Programming Boxes December Course 2023 Advanced Final Contest (Tyx2019) Batch 12
mountainrange N/A Tags: Data Structures, Greedy mountainrange Codeforces 935F Batch 12
cashmoney N/A Tags: Math Cash Money 2020 CNY Batch 12
grapevine N/A Tags: Data Structures, Divide and Conquer, Graph Theory, Trees Grapevine NOI 2022 Finals (huajun, jeff_) Batch 12
rockclimbing N/A Tags: Graph Theory rockclimbing NOI 2016 Batch 12
weightedguess N/A Tags: Dynamic Programming Weighted Guess Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 12
magick N/A Tags: Adhoc, Information Theory, Math Magick RI-HCI NOI Selection Test 2019 Communication 12
guessproblem3 N/A Tags: Joke Guess Problem 3 April Fools 2023 (ecxx) Batch 12
royalguards N/A Tags: Data Structures, Dynamic Programming royalguards AMOS OI 2022 (buffed) (shoryu386) Batch 12
findinggf N/A Tags: Dynamic Programming findinggf Luogu P1509 Batch 12
digitsum N/A Tags: Dynamic Programming digitsum UOJ Easy Round #4 Batch 12
thunderstorm N/A Tags: Data Structures, Greedy Thunderstorm Dec Trg 2019 (Elementary) Batch 12
toblerone N/A Tags: Brute Force, Dynamic Programming, Greedy toblerone HCI Mock NOI 2015 Batch 12
pressstart N/A Tags: Data Structures, Graph Theory Press Start! HCI-RI 2020 May Contest (bensonlzl) Batch 12
maximummonogonosity N/A Tags: Dynamic Programming maximummonogonosity Codeforces 1859E Batch 12
ohbabyntriples N/A Tags: Binary Search, Data Structures, Greedy Oh Baby, n Triples! IOI 2020 Practice Session Batch 12
stations N/A Tags: Graph Theory, Information Theory, Trees Stations IOI 2020 (Day 2) Communication 12
countinghaybales N/A Tags: Dynamic Programming countinghaybales USACO 2022 Jan, Platinum Batch 12
cyberland_apio23 N/A Tags: Graph Theory Cyberland APIO 2023 Interactive 12
subwaytrip N/A Tags: Graph Theory subwaytrip Dunjudge Archive Batch 12
catalansum N/A Tags: Explicitly Excluded (from IOI), Math catalansum (EE) Educational Round 3 (errorgorn, oolimry) Batch 12
tickets N/A Tags: Adhoc, Data Structures Carnival Tickets IOI 2020 Interactive 11
werewolf N/A Tags: Data Structures, Graph Theory, Trees Werewolf IOI 2018 Interactive 11
pekora N/A Tags: Greedy Pekora and Trampoline Educational Round 8 (Goodbye oolimry) (oolimry) Batch 11
robot N/A Tags: Data Structures Robots Educational Round 8 (Goodbye oolimry) (oolimry) Batch 11
thanossort N/A Tags: Adhoc, Divide and Conquer thanossort RSA Fun Contest (errorgorn) Interactive 11
spiderweb N/A Tags: Dynamic Programming, Graph Theory spiderweb Dunjudge Archive Batch 11
buildings N/A Tags: Data Structures, Line Sweep/Sliding Window Buildings Dunjudge Archive Batch 11
lppufdsrb N/A Tags: Data Structures, Graph Theory, Square Root Decomposition Lazy Propagation Persistent Union Find Disjoint Set with Rollbacks Educational Round 4 (jamessng, errorgorn) Batch 11
rainbowfish N/A Tags: Dynamic Programming, Graph Theory, Trees Rainbow Fish Mock APIO 2015 Batch 11
aesthetic N/A Tags: Binary Search, Data Structures, Graph Theory aesthetic NOI 2020 Finals (jeff_) Batch 11
sumo N/A Tags: Binary Search, Graph Theory sumo COCI 2013/2014 Batch 11
spiraldance N/A Tags: Adhoc, Math Estelle’s Spiral Dance RI-HCI NOI Selection Test 2018 Batch 11
banks N/A Tags: Graph Theory Banks IOI 2020 Practice Session Batch 11
trains_mco N/A Tags: Graph Theory, Greedy trains_mco MCO 2015 Batch 11
notebook N/A Tags: Graph Theory notebook Dunjudge Archive Batch 11
humantrafficking N/A Tags: Graph Theory Human Trafficking Italian Informatics Olympiad Batch 11
xortree N/A Tags: Data Structures xortree Classic Problem (errorgorn) Batch 11
fire N/A Tags: Data Structures, Line Sweep/Sliding Window fire JOI 2020 Final Round Batch 11
animaleditor N/A Tags: Data Structures animaleditor MCO Batch 11
snukethewizard N/A Tags: Adhoc, Binary Search snukethewizard AtCoder Batch 11
split2 N/A Tags: Graph Theory, Greedy, Trees Split December Course 2018 Elementary Final Contest Batch 11
voting N/A Tags: Data Structures, Greedy Voting Dunjudge Archive Batch 11
inequality N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming, Line Sweep/Sliding Window inequality RI-HCI NOI Selection Test 2020 (0rang3) Batch 11
infinitezoo N/A Tags: Bitmask, Graph Theory, Greedy, Math Zookeeper and The Infinite Zoo Codeforces Global Round 13 (errorgorn) Batch 11
hld2 N/A Tags: Data Structures, Graph Theory, Trees hld2 LOJ P3532 Batch 11
unitedcows N/A Tags: Data Structures, Line Sweep/Sliding Window United Cows USACO 2021 Open, Gold Batch 11
inequality3 N/A Tags: Data Structures Social Inequality TOKI Open 2014 Batch 11
makemst N/A Tags: Graph Theory, Math makemst Codeforces 1088F Batch 11
threetowers N/A Tags: Brute Force, Greedy threetowers POI 2015 Round 2 Day 2 Q2 Batch 11
passwords N/A Tags: Graph Theory passwords Dunjudge Archive Batch 11
holdinghands N/A Tags: Graph Theory, Trees holdinghands Dec Course 2020 BAPS (jiahng) Batch 11
portals N/A Tags: Data Structures, Graph Theory portals USACO 2021 US Open, Gold Batch 10
packingpests N/A Tags: Data Structures, Dynamic Programming packingpests Kattis Batch 10
youngmaids N/A Tags: Data Structures youngmaids Dunjudge Archive Batch 10
selfstudy N/A Tags: Binary Search, Greedy Self Study JOI 2022 Final Round Batch 10
mobitel N/A Tags: Dynamic Programming, Square Root Decomposition Mobitel COCI 2018/2019 Batch 10
markinghouses N/A Tags: Bitmask, Dynamic Programming Marking Houses RI-HCI Final Contest 2022 Batch 10
funnytree N/A Tags: Graph Theory, Trees Funny Tree (Extreme Version) RuCode 2020 Div A (Extreme Version) (0rang3, rs) Batch 10
compact N/A Tags: Data Structures, Dynamic Programming compact Dunjudge Archive Batch 10
roads N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Road Closures APIO 2021 Interactive 10
sculptures_apio15 N/A Tags: Bitmask, Dynamic Programming Bali Sculptures APIO 2015 Batch 10
books N/A Tags: Graph Theory, Greedy Ancient Books IOI 2017 Interactive 10
trapezes N/A Tags: Binary Search, Brute Force Trapezes DDC23 Final (oolimry) Batch 10
election_joi22 N/A Tags: Dynamic Programming Let's Win the Election JOI 2022 Final Round Batch 10
ballsofbuma N/A Tags: Adhoc Balls of Buma Dunjudge Archive Batch 10
flood N/A Tags: Graph Theory, Math Flood POI 2018 Round 1 Q3 Batch 10
guards_easy N/A Tags: Binary Search, Data Structures, Dynamic Programming, Joke Guards (Easy) Dunjudge Archive (modified) (beepbeepsheep) Batch 10
robot2 N/A Tags: Adhoc, Binary Search, Line Sweep/Sliding Window robot2 Dunjudge Archive Batch 10
lightsflip N/A Tags: Adhoc, Dynamic Programming lightsflip Dunjudge Archive Batch 10
shopping N/A Tags: Dynamic Programming Shopping Dunjudge Archive Batch 10
threetwentyoneam N/A Tags: Dynamic Programming threetwentyoneam AOI 2023 Day 1 (shoryu386) Batch 10
bitaro N/A Tags: Dynamic Programming, Graph Theory, Square Root Decomposition Bitaro's Party JOI 2017/2018 Spring Camp Batch 10
pandasoldiers N/A Tags: Adhoc, Data Structures Soldiers Dunjudge Archive Batch 10
snakecode N/A Tags: Dynamic Programming snakecode Dunjudge Archive Interactive 10
whatisthisactf N/A Tags: Explicitly Excluded (from IOI), Joke What is this, a CTF? April Fools 2023 (tux) Interactive 10
kmxorm N/A Tags: Bitmask, Math, Meet in the Middle kmxorm ASEAN Sparring 2022 (zscoder) Batch 10
parallelogramfest N/A Tags: Dynamic Programming parallelogramfest HCI EC³ Beginner Contest (Tyx2019) Batch 10
frisbee N/A Tags: Data Structures, Dynamic Programming, Slope Trick Frisbee Training 2019 IOI Problem Setter Contest (0rang3) Batch 10
copyandpaste N/A Tags: Greedy Copy And Paste Codeforces 1688F Batch 10
trekking N/A Tags: Bitmask, Dynamic Programming, Graph Theory Jungle Trekking HCI NOI Selection Test 2017 Batch 10
graph N/A Tags: Graph Theory, Greedy, Trees graph Dunjudge Archive Batch 10
morepaths N/A Tags: Dynamic Programming morepaths Dunjudge Archive Batch 10
servers N/A Tags: Graph Theory, Trees Inside information BOI 2021 Batch 10
galaxycollapse N/A Tags: Graph Theory galaxycollapse AOI 2023 Day 2 (shoryu386) Batch 10
chemistry N/A Tags: Dynamic Programming, Joke chemistry April Fools Contest 2020 (0rang3) Batch 9
christmasfiboseq N/A Tags: Math Chirstmas Fibonacci Sequence Educational Round 2 (errorgorn) Batch 9
flooding N/A Tags: Graph Theory flooding Dunjudge Archive Batch 9
soos N/A Tags: Graph Theory, Joke, Math soos April Fools 2023 (hmm) Batch 9
harbingers N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees harbingers CEOI 2009 Batch 9
duathlon N/A Tags: Graph Theory, Trees Duathlon APIO 2018 Batch 9
ktupleflip N/A Tags: Adhoc, Greedy K-tuple Flip TROC 24 (errorgorn) Batch 9
thanossort_st4 N/A Tags: Adhoc, Divide and Conquer, Explicitly Excluded (from IOI) thanossort_st4 RSA Fun Contest (errorgorn) Interactive 9
climatechange N/A Tags: Binary Search, Data Structures, Dynamic Programming climatechange Dunjudge Archive Batch 9
treasures N/A Tags: Graph Theory Stolen Treasures Dunjudge Archive Batch 9
pastiri N/A Tags: Graph Theory, Greedy, Trees pastiri COI 2019/2020 Batch 9
biscuits N/A Tags: Dynamic Programming, Math Packing Biscuits IOI 2020 (Day 2) Interactive 9
wiring N/A Tags: Adhoc, Greedy Fix Wiring Polish Collegiate Programming Contest 2021 Batch 9
passes N/A Tags: Bitmask, Brute Force, Greedy, Math passes BOI 2022 Batch 9
niangao N/A Tags: Data Structures Nian Gao 2020 CNY (errorgorn) Batch 9
network2 N/A Tags: Data Structures, Graph Theory, Trees network Dunjudge Archive Batch 9
shorten N/A Tags: Brute Force, Graph Theory, Trees shorten AGC 001C Batch 9
alien9 N/A Tags: Adhoc, Dynamic Programming, Math alien9 IMO Shortlist 1996 Batch 9
ufo N/A Tags: Dynamic Programming ufo Dunjudge Archive Batch 9
iqtest4 N/A Tags: Math iqtest4 Valentine's Day Contest 2023 (zixuan) Batch 9
usefft1 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 1 Classic Problem Batch 9
hurt N/A Tags: Dynamic Programming Hurt LOJ 3864 Batch 9
haiku N/A Tags: Dynamic Programming Iroha and Haiku AtCoder Batch 9
coolinteractive N/A Tags: Adhoc Cool Interactive Educational Round 8 (Goodbye oolimry) (errorgorn) Interactive 9
ponteng N/A Tags: Math, Square Root Decomposition Ponteng 2019 IOI Problem Setter Contest Batch 9
hop N/A Tags: Math hop COCI 2020/2021 Contest #4 Problem 3 Batch 9
wandering N/A Tags: Data Structures, Graph Theory, Trees wandering AGC 029 Batch 9
wabot2 N/A Tags: Constructive Algorithms, Data Structures, Greedy wabot2 ASEAN Sparring 2022 (bensonlzl) Batch 9
clipboard N/A Tags: Adhoc, Data Structures Jianzhi’s Clipboard Sorting RI NOI Selection Test 2017 Batch 9
crab N/A Tags: Bitmask, Dynamic Programming Crab NUSH NOI Selection Test 2018 Batch 9
rbpoints N/A Tags: Data Structures, Greedy rbpoints ABC 091C Batch 9
citymapping N/A Tags: Constructive Algorithms, Graph Theory, Information Theory, Trees CityMapping NOI 2018 (pwypeanut) Interactive 9
airline N/A Tags: Graph Theory, Information Theory airline JOISC 2018, Day 3 Communication 9
vault N/A Tags: Dynamic Programming, Greedy vault BOI 2022 Batch 8
escape N/A Tags: Bitmask, Brute Force, Graph Theory Escape UWCOI 2020 (socho, astoria, kimbj0709) Batch 8
visitinggf N/A Tags: Dynamic Programming visitinggf Luogu P5322 Batch 8
cringemeter N/A Tags: Greedy Cringe Meter Codeforces 1844F Batch 8
changingcolours N/A Tags: Data Structures, Dynamic Programming changingcolours RI Problem Setter Contest 2019 (rs) Batch 8
sale N/A Tags: Data Structures, Greedy sale Dunjudge Archive Batch 8
multiple N/A Tags: Graph Theory multiple Dunjudge Archive Batch 8
grazing N/A Tags: Bitmask, Brute Force, Graph Theory grazing USACO Bronze Jan 2012 Batch 8
chess N/A Tags: Adhoc, Bitmask, Data Structures chess NUSH ISC 2018 Batch 8
cakeslicing N/A Tags: Constructive Algorithms cakeslicing LOJ #6744 Batch 8
trivialexam_ex N/A Tags: Explicitly Excluded (from IOI), Joke trivialexam_ex April Fools 2023 (Xiaoyang) Batch 8
doll N/A Tags: Adhoc, Constructive Algorithms Mechanical Doll IOI 2018 Interactive 8
sarenlist N/A Tags: Bitmask, Brute Force, Graph Theory, Trees sarenlist COCI 2021/2022 Batch 8
doors N/A Tags: Graph Theory Doors Dunjudge Archive Batch 8
industriouslibrarian N/A Tags: Data Structures industriouslibrarian LOJ #2639 Batch 8
toxic N/A Tags: Binary Search, Information Theory Toxic Gene NOI 2023 Finals (bensonlzl) Interactive 8
redistributinggifts N/A Tags: Bitmask, Dynamic Programming redistributinggifts USACO 2022 Feb Gold Batch 8
garaza N/A Tags: Data Structures, Math garaza COCI Batch 8
leastround N/A Tags: Dynamic Programming leastround Codeforces 2B Batch 8
ratar N/A Tags: Brute Force, Dynamic Programming ratar COCI 2013/2014 Batch 8
rooms N/A Tags: Dynamic Programming, Graph Theory, Trees rooms RI Mock NOI 2015 Batch 8
rabbitplane N/A Tags: Binary Search, Greedy rabbitplane RI Problem Setter Contest 2019 (bensonlzl) Batch 8
cardgame2 N/A Tags: Dynamic Programming cardgame2 Dunjudge Archive Batch 8
letterstamper_ex N/A Tags: Dynamic Programming Letter Stamper (Extreme) Google Code Jam 2010 (modified) (errorgorn, ryangohca) Batch 8
gravity N/A Tags: Graph Theory gravity USACO 2013 US Open, SIlver Batch 8
dominoes N/A Tags: Binary Search, Data Structures, Square Root Decomposition dominoes Educational Round 9 (maomao90, zaneyu) Batch 8
alphabrackets N/A Tags: Data Structures, Dynamic Programming alphabrackets Dec Course Final Contest 2017 Batch 8
paintrectangles N/A Tags: Data Structures, Line Sweep/Sliding Window paintrectangles Codeforces 983D Batch 8
sumzero N/A Tags: Adhoc, Binary Search, Dynamic Programming sumzero RMI 2020 Batch 8
latex N/A Tags: Data Structures, Dynamic Programming latex RI Deccourse 2018 Selection Test Batch 8
kas N/A Tags: Dynamic Programming kas COCI 2016/2017 Round #4 Batch 8
switches2 N/A Tags: Dynamic Programming, Math switches2 Educational Round 7 (errorgorn) Batch 8
judgeantibreaker N/A Tags: Binary Search, Square Root Decomposition judgeantibreaker Educational Round 6 (oolimry) Batch 8
ghostrule N/A Tags: Graph Theory, Trees Ghost Rule December Course 2023 Advanced Final Contest (AlphanumericUsername) Batch 8
efficientdelivery N/A Tags: Adhoc, Brute Force efficientdelivery UWCOI 2021 Batch 8
love N/A Tags: Bitmask, Dynamic Programming, Graph Theory, Trees What is love? Luogu P8280 Batch 8
expressways N/A Tags: Graph Theory expressways Dunjudge Archive Batch 8
permutationswap N/A Tags: Adhoc permutationswap Valentine's Day Contest 2022 (maomao90) Batch 8
minerals N/A Tags: Information Theory minerals JOISC 2019 Interactive 8
nutritionist N/A Tags: Data Structures nutritionist Dunjudge Archive Batch 8
relutree N/A Tags: Data Structures relutree Classic Problem (errorgorn) Batch 8
osumnjiceni N/A Tags: Data Structures, Greedy, Trees Osumnjičeni COCI 2021/2022 Batch 7
dzumbus N/A Tags: Dynamic Programming, Graph Theory, Trees Džumbus COCI 2019/2020 Batch 7
rarkids N/A Tags: Constructive Algorithms, Math rarkids IOI Sparring 2018 SGP Interactive 7
elephants N/A Tags: Binary Search, Square Root Decomposition Elephants IOI 2011 Interactive 7
rainbowroad_ex N/A Tags: Dynamic Programming, Graph Theory, Trees Rainbow Road (Extreme) HCI-RI 2020 May Contest (modified) (errorgorn) Batch 7
cross N/A Tags: Dynamic Programming Cross Dunjudge Archive Batch 7
qualitycontrol N/A Tags: Graph Theory, Trees Quality Control Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Batch 7
pokemonmaster N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Square Root Decomposition, Trees I want to be the very best too! NOI 2017 Batch 7
tokitsukazeandexplosion N/A Tags: Binary Search, Greedy tokitsukazeandexplosion Codeforces 1190E Batch 7
sumalllis N/A Tags: Bitmask, Dynamic Programming, Joke Sum All LIS Luogu P4484 (modified) (zaneyu) Batch 7
learningtrack N/A Tags: Divide and Conquer learningtrack LOJ #2773 Batch 7
wallisstop N/A Tags: Binary Search, Data Structures, Graph Theory Wall Is Stop Dunjudge Archive (bensonlzl) Batch 7
familytree N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Penguin's Adventures Codeforces 671D Batch 7
holeetree N/A Tags: Explicitly Excluded (from IOI) \( H^{o^{L^{e^e_e}_{e^e_e}}_{L^{e^e_e}_{ e^e_e}}}_{o^{L^{e^e_e}_{ e^e_e}}_{L^{e^e_e}_{e^e_e}}} \) 🎄 Hello 2022 (errorgorn) Batch 7
luckynumbers N/A Tags: Adhoc, Dynamic Programming Lucky Numbers Educational Round 8 (Goodbye oolimry) (oolimry) Batch 7
goodsubsegments N/A Tags: Data Structures goodsubsegments Codeforces Round #493 (Div. 1) Batch 7
souvenirs N/A Tags: Data Structures souvenirs Codeforces 765F Batch 7
sequence N/A Tags: Adhoc, Greedy sequence AtCoder Batch 7
cactus N/A Tags: Dynamic Programming, Graph Theory, Trees cactus LOJ #2250 Batch 7
bananaland N/A Tags: Dynamic Programming bananaland NUSH ISC 2018 Batch 7
ispit N/A Tags: Adhoc ispit COCI 2018/2019 Batch 7
fun N/A Tags: Adhoc, Graph Theory, Information Theory, Trees Fun Tour APIO 2020 Interactive 7
cookie N/A Tags: Dynamic Programming Cookie Educational Codeforces Round 59 Batch 7
fibotree N/A Tags: Data Structures, Explicitly Excluded (from IOI), Math fibotree Bubble Cup 14 (modified) Batch 7
yabbitmeetup N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees yabbitmeetup HCI NOI Selection Retest 2020 (bensonlzl) Batch 7
graphoverflow N/A Tags: Graph Theory, Math graphoverflow RI Deccourse 2018 Selection Test (jerryhanjt) Batch 7
lctocd N/A Tags: Brute Force, Data Structures, Divide and Conquer, Graph Theory, Greedy, Trees LCT OCD Atcoder Nikkei Finals 2019 Batch 7
legowall N/A Tags: Dynamic Programming, Math Lego Wall EGOI 2022 Day 1 Batch 7
construction N/A Tags: Graph Theory, Trees Construction of Highway JOI 2017/2018 Spring Camp Batch 7
semafor N/A Tags: Explicitly Excluded (from IOI), Graph Theory, Math semafor COI 2020 Batch 7
christmaswall N/A Tags: Explicitly Excluded (from IOI), Math Christmas Wall Educational Round 2 (maomao90) Batch 7
lamps N/A Tags: Graph Theory Lamps Codeforces 1290C Batch 7
friend N/A Tags: Adhoc friend IOI 2014 Interactive 7
globalwarming_ex N/A Tags: Data Structures, Graph Theory globalwarming_ex Dunjudge Archive Batch 7
clockpalindrome N/A Tags: Adhoc, Dynamic Programming clockpalindrome December Course 2019 Advanced Final Contest Batch 7
hiddenarray N/A Tags: Joke, Math Hidden Array April Fools 2023 (ecxx) Batch 6
killanton N/A Tags: Brute Force, Greedy Kill Anton Codeforces Round 723 (errorgorn) Batch 6
nuskevsphantom N/A Tags: Graph Theory, Trees Nuske vs Phantom Thnook AGC 015C Batch 6
cheaters N/A Tags: Explicitly Excluded (from IOI), Math cheaters Educational Round 3 (errorgorn) Batch 6
prefixsums2 N/A Tags: Math Prefix Sums 2 Educational Round 10 (Goodbye cstuart and kai824) (errorgorn) Batch 6
merchant2 N/A Tags: Greedy merchant2 ABC 047D Batch 6
couples N/A Tags: Dynamic Programming couples December Course 2018 Advanced Final Contest Batch 6
touchinggrass N/A Tags: Data Structures, Divide and Conquer, Graph Theory, Trees Touching Grass Luogu P6329 Batch 6
styles N/A Tags: Binary Search, Data Structures, Dynamic Programming Styles IOI 2020 Practice Session Batch 6
taxes N/A Tags: Data Structures, Dynamic Programming, Square Root Decomposition taxes December Course 2018 Advanced Final Contest, ROI 2018 Day 1 Batch 6
bunchlocks N/A Tags: Graph Theory bunchlocks Dunjudge Archive Batch 6
canbashsavetheday N/A Tags: Data Structures, Graph Theory, Trees canbashsavetheday Codeforces 757G Batch 6
tournament N/A Tags: Graph Theory, Trees tournament IOI 2012 Interactive 6
queuestack N/A Tags: Adhoc, Data Structures Queuestack Educational Round 10 (Goodbye cstuart and kai824) (lida, oolimry, cstuart) Batch 6
hackthectf N/A Tags: Binary Search, Greedy hackthectf HCI EC³ Beginner Contest (blackscreen1, shoryu386) Batch 6
sudoku N/A Tags: Constructive Algorithms, Greedy sudoku NOI 2015 Batch 6
fencing2 N/A Tags: Data Structures fencing2 RI-HCI December Course Selection 2020 (errorgorn) Batch 6
newlottery N/A Tags: Dynamic Programming New Lottery Google Code Jam 2014 Batch 6
boomerangs N/A Tags: Adhoc Bouncing Boomerangs Codeforces Raif Round 1 (bensonlzl) Batch 6
multiplechoice N/A Tags: Constructive Algorithms multiplechoice USACO 2022 Jan, Platinum Batch 6
circleselection N/A Tags: Data Structures, Math Circle selection APIO 2018 Batch 6
flyingsquirrel N/A Tags: Data Structures, Dynamic Programming, Greedy, Slope Trick Flying Squirrel Korean IOI Selection Day 1 Batch 6
colouring N/A Tags: Graph Theory colouring AGC 012B Batch 6
gizmoguy N/A Tags: Slope Trick Gizmo Guy IOI 2020 Practice Session Batch 6
quality N/A Tags: Binary Search, Dynamic Programming Quality of Living IOI 2010 Interactive 6
workload2 N/A Tags: Square Root Decomposition Workload 2 Dec Course 2021 Intermediate Contest 4 (Data Structures III) (errorgorn) Batch 6
colourwalk N/A Tags: Graph Theory Colour Walk RI-HCI Final Contest 2022 Batch 6
candies_ioi N/A Tags: Data Structures Distributing Candies IOI 2021 Interactive 6
sandwich N/A Tags: Divide and Conquer Sandwich HCI-NUSH NOI Selection 2022 (errorgorn, oolimry, yanhao) Batch 6
goneviral N/A Tags: Binary Search, Graph Theory Gone Viral IOI 2020 Practice Session Batch 6
alice N/A Tags: Graph Theory, Information Theory Alice IMO Shortlist 2019 Interactive 6
tomandjerry N/A Tags: Dynamic Programming, Graph Theory, Trees Tom & Jerry Codechef Batch 6
fish N/A Tags: Data Structures, Dynamic Programming Catfish Farm IOI 2022 (Day 1) (oolimry) Interactive 6
collectingstamps3 N/A Tags: Dynamic Programming collectingstamps3 JOI 2020 Final Round Batch 5
removemq N/A Tags: Brute Force, Data Structures, Greedy removemq ARC 098E Batch 5
rabbitradar N/A Tags: Data Structures, Dynamic Programming rabbitradar Dunjudge Archive (bensonlzl) Batch 5
strangedevice2 N/A Tags: Binary Search, Graph Theory, Information Theory, Trees strangedevice2 Codeforces 1158E Interactive 5
newhome N/A Tags: Divide and Conquer, Slope Trick New Home APIO 2018 Batch 5
kronican N/A Tags: Bitmask, Dynamic Programming kronican COCI 2016/2017 Batch 5
4cuts N/A Tags: Adhoc, Brute Force 4cuts Dunjudge Archive Batch 5
birthday N/A Tags: Explicitly Excluded (from IOI), Math birthday RI Problem Setter Contest 2019 (syy) Batch 5
doodles N/A Tags: Graph Theory, Math doodles December Course 2019 Advanced Final Contest (rs) Batch 5
restoreroad N/A Tags: Graph Theory Restore Road ABC 074D Batch 5
trianglesum N/A Tags: Brute Force, Dynamic Programming trianglesum NOI 2010 Selection Test Batch 5
marathon_usaco N/A Tags: Data Structures Marathon USACO 2014 Dec, Gold Batch 5
monke N/A Tags: Math Monke Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 5
badnim3 N/A Tags: Bitmask, Explicitly Excluded (from IOI), Math Bad Nim 3 (EE) Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 5
tourists N/A Tags: Data Structures, Graph Theory, Trees Tourists EGOI 2022 Day 1 Batch 5
dinnerbox N/A Tags: Dynamic Programming, Greedy Jianzhi’s Dinner Box RI NOI Selection Test 2017 Batch 5
bore N/A Tags: Brute Force Boring Dunjudge Archive Batch 5
showertheduck N/A Tags: Dynamic Programming Shower the Duck DDC23 Final (oolimry) Batch 5
lost N/A Tags: Bitmask, Information Theory Jianzhi’s Lost RI NOI Selection Test 2017 Interactive 5
persistentlists N/A Tags: Binary Search, Data Structures, Square Root Decomposition Persistent Lists Educational Round 6 (oolimry) Batch 5
bananadance N/A Tags: Math bananadance Dunjudge Archive Batch 5
diesel N/A Tags: Dynamic Programming, Graph Theory diesel NOI 2013 Batch 5
messy N/A Tags: Binary Search Unscrambling a Messy Bug IOI 2016 Interactive 5
cardgame N/A Tags: Data Structures, Dynamic Programming cardgame Dunjudge Archive Batch 5
deciphering_zane_ex N/A Tags: Explicitly Excluded (from IOI), Joke Decusohrting Znakeje: extendied c34s8hb April Fools 2023 (ecxx, Xiaoyang, leyi) Interactive 5
sillysort N/A Tags: Math sillysort info(1) cup 2019 (modified) (errorgorn) Batch 5
dungeons2 N/A Tags: Binary Search, Data Structures dungeons2 AGM 2021, Final Round, Day 2 Batch 5
oenothera N/A Tags: Data Structures, Greedy, Square Root Decomposition oenothera Codeforces 1039E Batch 5
souvenirs2 N/A Tags: Data Structures, Math souvenirs2 ARC 068C Batch 5
3dhistogram N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming 3D Histogram COCI 2020 Batch 5
learningtrack2 N/A Tags: Data Structures, Dynamic Programming learningtrack2 LOJ #3068 Batch 5
hunterxhunter N/A Tags: Dynamic Programming hunterxhunter International Autumn Tournament in Informatics 2020 Batch 5
dateornot N/A Tags: Binary Search, Information Theory Date Or Not? Dunjudge Archive Interactive 5
messages N/A Tags: Information Theory Messages Valentine's Day Contest 2023 (beepbeepsheep) Communication 5
circuit N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Digital Circuit IOI 2022 (Day 2) Interactive 5
cake3 N/A Tags: Divide and Conquer, Dynamic Programming cake3 JOI Spring Camp 2019 Batch 5
rainbow N/A Tags: Data Structures, Graph Theory, Math Land of the Rainbow Gold APIO 2017 Interactive 5
woodenraft N/A Tags: Greedy, Math woodenraft Codeforces 1223G Batch 5
trivialmaths2 N/A Tags: Explicitly Excluded (from IOI), Math trivialmaths2 (EE) Educational Round 7 (errorgorn) Batch 5
bracketcoloring N/A Tags: Dynamic Programming bracketcoloring Codeforces 149D Batch 5
devil N/A Tags: Constructive Algorithms, Graph Theory The Devil's Algorithm Hello 2022 (errorgorn) Batch 5
productcounting N/A Tags: Divide and Conquer, Square Root Decomposition Product Counting Educational Round 5 (errorgorn) Batch 5
timeleap N/A Tags: Data Structures timeleap JOI Batch 5
marathon N/A Tags: Dynamic Programming, Graph Theory marathon RI Problem Setter Contest 2019 (Ziwyy) Batch 5
forensic N/A Tags: Brute Force, Graph Theory forensic NOI 2012 Batch 5
rushing N/A Tags: Brute Force, Graph Theory Rushing DDC23 Final (oolimry) Batch 5
corporate N/A Tags: Data Structures, Divide and Conquer Corporate IOI 2020 Practice Session Batch 5
perm N/A Tags: Constructive Algorithms Permutation APIO 2022 Interactive 5
sortedandsorted N/A Tags: Data Structures, Dynamic Programming sortedandsorted ARC 097 Batch 5
wavynumbers N/A Tags: Brute Force, Math, Meet in the Middle wavynumbers Codeforces 273E Batch 5
lottery N/A Tags: Adhoc Lottery CEOI 2018 Batch 5
vision N/A Tags: Adhoc, Constructive Algorithms, Information Theory Vision Program IOI 2019 Interactive 5
coins N/A Tags: Information Theory Coins IOI 2017 Practice Communication 5
blocks N/A Tags: Information Theory, Math Blocks UWCOI 2020 (socho, astoria, kimbj0709) Interactive 5
mergecards N/A Tags: Adhoc, Dynamic Programming Merge Cards Google Kick Start 2020 Round G Batch 5
keys N/A Tags: Graph Theory, Trees Keys IOI 2021 Interactive 5
cats N/A Tags: Adhoc cats NOI 2014 Batch 5
waterslide N/A Tags: Data Structures Water Slide ROI 2022 Batch 5
elca N/A Tags: Data Structures, Graph Theory, Trees elca Codeforces 482E Batch 4
islands2 N/A Tags: Dynamic Programming, Graph Theory, Trees Islands IOI 2008 Batch 4
rect N/A Tags: Brute Force, Data Structures Rectangle IOI 2019 (Day 1) Interactive 4
mononono N/A Tags: Adhoc Mononono Stack December Course 2023 Advanced Final Contest (TheRaptor) Batch 4
delegation N/A Tags: Dynamic Programming, Graph Theory, Trees Delegation USACO 2020 Feb, Gold Batch 4
lightsout N/A Tags: Constructive Algorithms, Dynamic Programming, Graph Theory, Trees Light's Out Dunjudge Archive Interactive 4
bridge_cerc N/A Tags: Graph Theory, Square Root Decomposition Bridge CERC 2018 Batch 4
superfanclub N/A Tags: Graph Theory, Trees Estelle’s Super Fan Club RI-HCI NOI Selection Test 2018 Interactive 4
election_joi N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Election Campaign JOI Open 2015 Batch 4
superpozicija N/A Tags: Constructive Algorithms, Greedy superpozicija COI 2022 Batch 4
suffixarray N/A Tags: Explicitly Excluded (from IOI), Math Oolimry and Suffix Array Codeforces Round 723 (zaneyu) Batch 4
socialdistance N/A Tags: Adhoc, Graph Theory, Trees Social Distance Codeforces 1381D Batch 4
switches N/A Tags: Explicitly Excluded (from IOI), Math switches Educational Round 7 (myrcella, errorgorn) Batch 4
tents N/A Tags: Dynamic Programming Tents JOI 2017/2018 Spring Camp Batch 4
switches998244353 N/A Tags: Explicitly Excluded (from IOI), Math switches998244353 (EE) Educational Round 7 (errorgorn) Batch 4
boxes N/A Tags: Dynamic Programming, Greedy Boxes with souvenirs IOI 2015 Interactive 4
superpiece N/A Tags: Adhoc, Graph Theory Superpiece EGOI 2022 Day 2 Batch 4
orlando N/A Tags: Bitmask, Data Structures, Dynamic Programming, Graph Theory, Trees orlando RI Problem Setter Contest 2019 (zhuan, 0rang3) Batch 4
izbori N/A Tags: Adhoc, Data Structures, Math izbori COCI 2021/2022 Batch 4
dynamicdiameter N/A Tags: Graph Theory, Trees Dynamic Diameter CEOI 2019 Batch 4
kucice N/A Tags: Line Sweep/Sliding Window kucice COCI 2021/2022 Batch 4
badnim2 N/A Tags: Explicitly Excluded (from IOI), Math Bad Nim 2 (EE) Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 4
fencing3 N/A Tags: Data Structures, Square Root Decomposition fencing3 Educational Round 3 (errorgorn, tqbfjotld) Batch 4
sequence_apio23 N/A Tags: Data Structures Sequence APIO 2023 Interactive 4
workload_ex N/A Tags: Explicitly Excluded (from IOI), Math workload_ex Classic Problem in China (Probably) (errorgorn) Batch 4
rookable N/A Tags: Graph Theory Rookable NUSH NOI Selection Test 2018 Batch 4
toy N/A Tags: Graph Theory, Trees toy ROI 2014 Batch 4
wiring_ioi N/A Tags: Dynamic Programming Wiring IOI 2017 Interactive 4
mincross_usaco N/A Tags: Data Structures mincross_usaco USACO 2017 Feb, Platinum Batch 4
infiniteseq N/A Tags: Dynamic Programming infiniteseq AtCoder Regular Contest 071 Batch 4
papplesort N/A Tags: Data Structures papplesort Dunjudge Archive Batch 4
split N/A Tags: Constructive Algorithms, Graph Theory, Trees Split the Attractions IOI 2019 (Day 1) Interactive 4
trackingtraining N/A Tags: Graph Theory, Math Tracking Training IOI 2020 Practice Session Batch 4
synchronization N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Synchronization JOI Open Contest 2013 Batch 4
lppfnlcst2 N/A Tags: Data Structures Lazy Propogation Persistant Fat Nodes Li Chao Segment Tree 2 Classic Problem (errorgorn) Batch 4
hungryrabbits3 N/A Tags: Binary Search, Greedy Hungry Rabbits 3 Dec Course 2022 BAPS (bensonlzl) Batch 4
catdog N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Cats or Dogs JOI Open 2018 Interactive 4
hypeboy N/A Tags: Bitmask, Dynamic Programming Hype Boy LOJ 3215 Batch 4
rainingseason N/A Tags: Data Structures, Graph Theory, Trees rainingseason Codeforces 1019E Batch 4
manhattancompass N/A Tags: Binary Search, Graph Theory manhattancompass AtCoder Batch 4
weddingcity N/A Tags: Constructive Algorithms, Graph Theory weddingcity IOI Sparring 2018 SGP Batch 4
wakeup N/A Tags: Binary Search, Data Structures Wake Up IOI 2020 Practice Session Batch 4
notimetodry N/A Tags: Data Structures, Square Root Decomposition No Time to Dry USACO 2021 February Contest, Platinum Batch 4
judgequeue N/A Tags: Data Structures judgequeue Dunjudge Archive Interactive 4
jedan N/A Tags: Dynamic Programming jedan COCI 2012/2013 Batch 4
idigit N/A Tags: Bitmask, Math I Dig It! IOI 2020 Practice Session Batch 4
prison N/A Tags: Constructive Algorithms, Divide and Conquer Prisoner Challenge IOI 2022 (Day 1) Interactive 4
spotlights N/A Tags: Adhoc Estelle’s Concert Spotlights RI-HCI NOI Selection Test 2018 Batch 4
meetings N/A Tags: Data Structures, Divide and Conquer Meetings IOI 2018 Interactive 4
zhylanio N/A Tags: Binary Search, Brute Force, Data Structures zhylanio IZHO 2022 Batch 4
visiting N/A Tags: Graph Theory, Trees visiting Dunjudge Archive Batch 4
seqtransform N/A Tags: Brute Force, Data Structures, Greedy seqtransform LOJ #3704 Batch 4
ples N/A Tags: Greedy ples COCI 2011/2012 Batch 4
cupboardjumps N/A Tags: Dynamic Programming, Slope Trick cupboardjumps Codeforces 1500F Batch 3
mushrooms N/A Tags: Constructive Algorithms, Information Theory Counting Mushrooms IOI 2020 (Day 2) Interactive 3
count1graphs N/A Tags: Math Count 1 Graphs Educational Round 4 (maomao90, errorgorn) Batch 3
greatmerge N/A Tags: Data Structures, Graph Theory, Trees greatmerge LOJ #2230 Batch 3
powersupply N/A Tags: Adhoc, Data Structures, Line Sweep/Sliding Window, Math Power Supply Educational Round 5 (cstuart) Batch 3
weightlifting N/A Tags: Dynamic Programming weightlifting Google Code Jam 2022 Round 1A Batch 3
neila N/A Tags: Adhoc, Math neila RMM 2013/5 Batch 3
supermarkets N/A Tags: Data Structures Supermarkets IOI 2020 Practice Session Batch 3
harvest N/A Tags: Data Structures Harvest JOI 2019/2020 Batch 3
wombats N/A Tags: Data Structures wombats IOI 2013 Interactive 3
enumeratingbrackets N/A Tags: Dynamic Programming Enumerating Brackets Waterloo Programming Contest 2016-10-01 Batch 3
winetasting N/A Tags: Data Structures winetasting LOJ #2133 Batch 3
railwaytrip2 N/A Tags: Data Structures Railway Trip 2 JOI 2022 Final Round Batch 3
messenger N/A Tags: Information Theory messenger Dunjudge Archive Communication 3
travelling N/A Tags: Math travelling ASEAN Sparring 2022 (kevinsogo) Batch 3
trianglecraft N/A Tags: Math Trianglecraft HCI NOI Selection Test 2017 Batch 3
seats N/A Tags: Data Structures Seats IOI 2018 Interactive 3
tickets_loj N/A Tags: Divide and Conquer, Dynamic Programming, Trees tickets_loj LOJ #2249 Batch 3
islands N/A Tags: Graph Theory Thousands Islands IOI 2022 (Day 2) Interactive 3
plants N/A Tags: Binary Search, Data Structures Comparing Plants IOI 2020 Interactive 3
zamjena N/A Tags: Graph Theory zamjena COCI 2018/2019 Batch 3
redstonelamps N/A Tags: Explicitly Excluded (from IOI), Math Redstone Lamps HCI NOI Selection Test 2017 Batch 3
squaregraph N/A Tags: Graph Theory Square Graph AGC 011C Batch 3
treepainting N/A Tags: Data Structures, Graph Theory, Trees treepainting LOJ #2001 Batch 3
linearbasis N/A Tags: Explicitly Excluded (from IOI), Math linearbasis Hello 2022 (errorgorn) Batch 3
addsubtract N/A Tags: Dynamic Programming, Greedy addsubtract Dunjudge Archive Batch 3
railroad N/A Tags: Graph Theory, Greedy Roller Coaster Railroad IOI 2016 Interactive 3
pawns N/A Tags: Adhoc, Explicitly Excluded (from IOI), Math e4e5 Ke2? Ke7? TROC 24 (maomao90, errorgorn) Batch 3
onlineexam N/A Tags: Constructive Algorithms, Explicitly Excluded (from IOI), Information Theory, Joke, Math Online Exam April Fools 2023 (zengminghao) Interactive 3
stagegames_part1 N/A Tags: Adhoc, Information Theory Estelle’s Stage Games (Subtasks 1 - 5) RI-HCI NOI Selection Test 2018 Interactive 3
knapsack2 N/A Tags: Dynamic Programming knapsack2 David Pisinger (1995) Batch 3
boxoffice N/A Tags: Brute Force, Data Structures Box Office Dunjudge Archive Batch 3
hyperoperations N/A Tags: Math hyperoperations Dunjudge Archive Batch 3
urbanplanning N/A Tags: Graph Theory, Trees urbanplanning IZhO 2022 Batch 3
prize N/A Tags: Binary Search, Information Theory The Big Prize IOI 2017 Interactive 3
sjeckanje N/A Tags: Data Structures, Greedy sjeckanje COCI 2020/2021 Batch 3
preciseforecast N/A Tags: Graph Theory preciseforecast LOJ #3101 Batch 3
guessproblem4 N/A Tags: Explicitly Excluded (from IOI), Joke Guess Problem 4 April Fools 2023 (ryangohca, ecxx) Interactive 3
mirrortree N/A Tags: Graph Theory, Trees mirrortree BOI 2011, Day 2 Batch 3
UCFJ N/A Tags: Data Structures UCFJ USACO 2021 US Open, Platinum Batch 3
tomskitchen N/A Tags: Dynamic Programming Tom’s Kitchen BOI 2019 Day 2 Batch 3
constellation2 N/A Tags: Line Sweep/Sliding Window constellation2 JOISC 2014 Batch 3
rabbitgifts N/A Tags: Data Structures, Math rabbitgifts December Course 2018 Advanced Final Contest Batch 3
springtrap N/A Tags: Data Structures springtrap Educational Round 1 (bensonlzl) Batch 3
bodyguard N/A Tags: Dynamic Programming bodyguard JOISC 2021 Batch 3
epicinteractive N/A Tags: Adhoc, Information Theory, Math Epic Interactive Educational Round 8 (Goodbye oolimry) (errorgorn, oolimry) Interactive 3
ruler N/A Tags: Brute Force, Data Structures Ruler Of The Zoo Educational Round 8 (Goodbye oolimry) (oolimry) Batch 3
girlfriends N/A Tags: Explicitly Excluded (from IOI), Math girlfriends (EE) CP Singles Day Contest 2020 (errorgorn) Batch 3
game N/A Tags: Graph Theory Game APIO 2022 Interactive 3
closing N/A Tags: Data Structures, Graph Theory, Greedy, Trees Closing Time IOI 2023 (Day 1) Interactive 3
secret_mco N/A Tags: Adhoc, Explicitly Excluded (from IOI) Secret MCO 2015 Batch 3
walk N/A Tags: Graph Theory Sky Walking IOI 2019 Interactive 3
earthwormlines N/A Tags: Data Structures earthwormlines LOJ #2303 Batch 3
boarding N/A Tags: Graph Theory boarding NUSH ISC 2018 Batch 3
foolpruf N/A Tags: Data Structures, Graph Theory, Greedy Foolprüf Security NERC 2019 Batch 3
joker N/A Tags: Adhoc, Divide and Conquer, Graph Theory joker BOI 2020 Batch 3
binaryseq N/A Tags: Math BinarySeq Dunjudge Archive (bensonlzl) Batch 3
perishableroads N/A Tags: Graph Theory perishableroads Codeforces 773D Batch 3
squidgame N/A Tags: Data Structures Squid Game 2: Hot Chocolate Valentine's Day Contest 2023 (Wenkai, beepbeepsheep) Batch 3
escapesadland N/A Tags: Binary Search, Graph Theory Escape Sadland Dunjudge Archive Batch 3
cantor N/A Tags: Binary Search, Information Theory cantor TROC 24 (errorgorn) Interactive 3
dahliahostels N/A Tags: Dynamic Programming, Math dahliahostels Valentines Contest 2021 (errorgorn) Batch 3
insects N/A Tags: Adhoc, Binary Search, Information Theory Rarest Insects IOI 2022 (Day 2) Interactive 3
shuffle N/A Tags: Constructive Algorithms, Graph Theory shuffle NOI 2019 (guangxuan) Interactive 3
bracketcount N/A Tags: Dynamic Programming, Explicitly Excluded (from IOI) bracketcount Valentines Contest 2021 (errorgorn) Batch 3
nom N/A Tags: Dynamic Programming, Math nom RMI 2021 Batch 3
minimax N/A Tags: Graph Theory, Trees minimax Hello 2020 (errorgorn) Batch 3
highway N/A Tags: Binary Search, Information Theory Highway Tolls IOI 2018 Interactive 3
parks N/A Tags: Adhoc, Constructive Algorithms, Graph Theory Fountain Parks IOI 2021 Interactive 3
evacuation N/A Tags: Data Structures, Divide and Conquer Evacuation XX Open Cup GP of Tokyo Batch 2
harmony N/A Tags: Graph Theory harmony Dunjudge Archive Batch 2
filibuster N/A Tags: Data Structures Filibuster IOI 2020 Practice Session Batch 2
edgeremove N/A Tags: Dynamic Programming, Graph Theory, Trees edgeremove LOJ #3705 Batch 2
dungeons N/A Tags: Graph Theory Dungeons Game IOI 2021 Interactive 2
loza N/A Tags: Data Structures, Graph Theory, Trees Loza COI 2009 Batch 2
registers N/A Tags: Bitmask, Constructive Algorithms Bit Shift Registers IOI 2021 Interactive 2
spiderclimb N/A Tags: Dynamic Programming, Trees spiderclimb LOJ #3661 Batch 2
fever N/A Tags: Graph Theory, Greedy fever JOISC 2021 Batch 2
builderswand N/A Tags: Dynamic Programming Builder’s Wand HCI NOI Selection Test 2017 Batch 2
streetlamps_ex N/A Tags: Data Structures, Divide and Conquer Street Lamps!! APIO 2019 but with more pain Batch 2
train_ioi N/A Tags: Graph Theory Toy Train IOI 2017 Interactive 2
flowercards N/A Tags: Graph Theory flowercards LOJ #536 Batch 2
computergame N/A Tags: Binary Search, Dynamic Programming, Greedy computergame Codeforces 1067D Batch 2
travelbloggers N/A Tags: Graph Theory, Joke Travel Bloggers Unknown Source Batch 2
competitiveteams N/A Tags: Graph Theory, Square Root Decomposition Competitive Teams HackerRank Batch 2
synergies N/A Tags: Constructive Algorithms, Graph Theory Synergies IOI 2020 Practice Session Batch 2
usefft4 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 4 Valentine's Day Contest 2022 (errorgorn) Batch 2
usefft2 N/A Tags: Math Use FFT 2 Valentine's Day Contest 2022 (errorgorn) Batch 2
mars N/A Tags: Graph Theory, Information Theory Mars APIO 2022 Interactive 2
consistency N/A Tags: Data Structures Consistency RI-HCI NOI Selection Test 2019 (bensonlzl) Batch 2
forkintheroad N/A Tags: Dynamic Programming, Graph Theory, Math forkintheroad AtCoder Batch 2
ninjashard N/A Tags: Data Structures Ninjas (Hard) TROC 24 (oolimry, errorgorn) Batch 2
paleta N/A Tags: Dynamic Programming, Graph Theory, Math paleta COCI 2013/2014 Batch 2
pancake_ex N/A Tags: Brute Force, Meet in the Middle Pancake (Extreme) Classic Problem Batch 2
pond N/A Tags: Data Structures, Dynamic Programming pond NOI 2021 Finals (jeff_) Batch 2
coolslogans N/A Tags: Data Structures coolslogans LOJ #6288 Batch 2
valves N/A Tags: Data Structures Valves Dec Course 2022 BAPS (beepbeepsheep) Batch 2
xorsplit N/A Tags: Bitmask, Divide and Conquer, Explicitly Excluded (from IOI) xorsplit Valentine's Day Contest 2023 (blackscreen1, pavement, maomao90, zaneyu) Batch 2
paint_ioi N/A Tags: Adhoc, Dynamic Programming Paint By Numbers IOI 2016 Interactive 2
killanton_ex N/A Tags: Bitmask, Dynamic Programming killanton_ex Valentine's Day Contest 2022 (errorgorn) Batch 2
sandcastle2 N/A Tags: Bitmask, Dynamic Programming, Graph Theory Sandcastle 2 JOI 2022 Final Round Batch 2
boat N/A Tags: Dynamic Programming, Math Boat APIO 2016 Batch 2
friendcross N/A Tags: Data Structures friendcross USACO 2017 Feb Plat Batch 2
figures N/A Tags: Binary Search, Dynamic Programming Figures IOI 2020 Practice Session Batch 2
sherlockgraph N/A Tags: Graph Theory sherlockgraph HackerRank Batch 2
soccer N/A Tags: Data Structures, Dynamic Programming, Graph Theory Soccer Stadium IOI 2023 (Day 1) Interactive 2
koala N/A Tags: Binary Search, Constructive Algorithms, Divide and Conquer, Information Theory Koala Game APIO 2017 Interactive 2
kanji N/A Tags: Information Theory kanji Dunjudge Archive Communication 2
seabreakpath N/A Tags: Data Structures Seabreak Path SGP Sparring 2021 (lovemathboy) Batch 2
cakeatstake N/A Tags: Data Structures Cake at Stake IOI 2020 Practice Session Batch 2
phonenumbers N/A Tags: Bitmask, Dynamic Programming phonenumbers USACO 2022 Feb, Platinum Batch 2
triumvirate N/A Tags: Dynamic Programming Triumvirate IOI 2020 Practice Session Batch 2
trespasser N/A Tags: Bitmask, Information Theory ADVANCED Trespasser 2019 IOI Problem Setter Contest (bensonlzl) Interactive 2
kthpar N/A Tags: Divide and Conquer, Explicitly Excluded (from IOI), Graph Theory, Trees JiaHng couldn’t solve this lol folklore (errorgorn) Batch 2
fruits_noi N/A Tags: Data Structures, Dynamic Programming Fruits NOI 2022 Finals (bensonlzl) Batch 2
cipele N/A Tags: Binary Search, Greedy cipele COCI 2018/2019 Batch 2
fiboregisters N/A Tags: Adhoc, Constructive Algorithms, Math IOI Registers: but epic TROC 24 (errorgorn) Batch 2
ninjaseasy N/A Tags: Data Structures Ninjas (Easy) TROC 24 (oolimry) Batch 2
paint_coi N/A Tags: Graph Theory, Square Root Decomposition paint_coi COI 2020 Batch 2
candycrush N/A Tags: Dynamic Programming Candy Crush Dunjudge Archive Batch 2
wearenumberone N/A Tags: Graph Theory We Are Number One IOI 2020 Practice Session Batch 2
stagegames_part2 N/A Tags: Adhoc, Information Theory Estelle’s Stage Games (Subtasks 6 - 10) RI-HCI NOI Selection Test 2018 Interactive 2
towers_ioi N/A Tags: Binary Search, Data Structures, Greedy Radio Towers IOI 2022 (Day 1) Interactive 2
gugdance N/A Tags: Constructive Algorithms, Graph Theory gugdance Dunjudge Archive Batch 2
lampice N/A Tags: Binary Search, Dynamic Programming, Graph Theory, Trees lampice COCI 2019/2020 Batch 2
twoavenues N/A Tags: Data Structures, Graph Theory, Trees twoavenues Codeforces 1648F Batch 2
obelisk N/A Tags: Graph Theory obelisk NOI 2014 Batch 2
cantor_ex N/A Tags: Binary Search, Information Theory cantor_ex Valentine's Day Contest 2022 (errorgorn) Interactive 2
inversionsum N/A Tags: Dynamic Programming, Math inversionsum Dunjudge Archive Batch 2
powerpoints N/A Tags: Constructive Algorithms Power Points IOI 2020 Practice Session Batch 2
firing N/A Tags: Data Structures Firing IOI 2020 Practice Session Batch 2
realfun N/A Tags: Binary Search Real Fun CPSPC 2010 Batch 1
shopping_joi N/A Tags: Binary Search, Data Structures, Divide and Conquer, Information Theory shopping_joi JOISC 2021 Communication 1
overtaking N/A Tags: Adhoc, Binary Search Overtaking IOI 2023 (Day 2) Interactive 1
sequence_loj N/A Tags: Graph Theory, Greedy sequence_loj LOJ #3158 Batch 1
hexagon N/A Tags: Graph Theory, Math Hexagonal Territory APIO 2021 Interactive 1
library N/A Tags: Binary Search, Information Theory Library JOI 2018/2019 Spring Camp Day 4 Interactive 1
sorting N/A Tags: Binary Search, Constructive Algorithms Sorting IOI 2015 Interactive 1
cursordistance N/A Tags: Binary Search, Math cursordistance Codeforces 1246F Batch 1
towns N/A Tags: Graph Theory, Information Theory, Trees Towns IOI 2015 Interactive 1
hanabi N/A Tags: Binary Search, Data Structures hanabi IOI Sparring 2018 SGP Batch 1
manymsts N/A Tags: Binary Search, Graph Theory manymsts LOJ #3635 Batch 1
countedges N/A Tags: Dynamic Programming, Graph Theory, Math Counting Edges USACO 2021 February Contest, Platinum Batch 1
chefmala N/A Tags: Data Structures chefmala CodeChef February Lunchtime 2022 (errorgorn) Batch 1
mooshroomfarm N/A Tags: Data Structures Mooshroom Farm HCI NOI Selection Test 2017 Batch 1
toxicwaste N/A Tags: Graph Theory Toxic Waste Dunjudge Archive Batch 1
virus N/A Tags: Adhoc, Graph Theory, Line Sweep/Sliding Window virus JOISC 2017, Day 1 Batch 1
teams N/A Tags: Constructive Algorithms, Data Structures, Dynamic Programming Teams IOI 2015 Interactive 1
kronecker N/A Tags: Math kronecker Valentine's Day Contest 2022 (errorgorn) Batch 1
paintbyrectangles N/A Tags: Graph Theory, Line Sweep/Sliding Window paintbyrectangles USACO 2022 Feb, Platinum Batch 1
splittingtree N/A Tags: Graph Theory, Trees Splitting Tree LOJ P3213 Batch 1
thesis N/A Tags: Binary Search, Dynamic Programming, Graph Theory, Trees thesis LOJ #511 Batch 1
alien10 N/A Tags: Explicitly Excluded (from IOI), Math alien10 uwu (errorgorn) Batch 1
avoidcollision N/A Tags: Dynamic Programming, Graph Theory avoidcollision ARC 090C Batch 1
treeinteger N/A Tags: Graph Theory, Greedy, Trees treeinteger ARC 063E Batch 1
watchmen N/A Tags: Graph Theory watchmen BOI 2021 Batch 1
gerrymandering_ex N/A Tags: Greedy Gerrymandering (Extreme) Dec Course 2021 BAPS (modified) (beepbeepsheep) Batch 1
switchandflip N/A Tags: Constructive Algorithms, Graph Theory, Math Switch and Flip Codeforces Global Round 13 (errorgorn, oolimry) Batch 1
present N/A Tags: Math present RMI 2021 Batch 1
cattown N/A Tags: Graph Theory Cat Town RI/RJC NOI Selection Test 2016 Batch 1
masquerade N/A Tags: Graph Theory, Math masquerade BZOJ 1064 Batch 1
scales N/A Tags: Brute Force, Information Theory Scales IOI 2015 Interactive 1
deciphering_zane_3 N/A Tags: Information Theory Deciphering Zane 3 DDC23 Final (oolimry) Interactive 1
gate N/A Tags: Data Structures, Graph Theory, Trees gate LOJ #2474 Batch 1
cellulardata N/A Tags: Bitmask, Dynamic Programming, Explicitly Excluded (from IOI), Math Cellular Data IOI 2020 Practice Session Batch 1
steeple N/A Tags: Graph Theory Cow Steeplechase USACO 2011 Nov, Gold Batch 1
fliprect N/A Tags: Adhoc, Data Structures, Dynamic Programming fliprect ARC 081F Batch 1
reflection N/A Tags: Constructive Algorithms, Math reflection RI-HCI NOI Selection Test 2020 (eutroph) Batch 1
gathering N/A Tags: Graph Theory, Greedy gathering USACO 2018 December Platinum Batch 1
hieroglyphs N/A Tags: Graph Theory, Math hieroglyphs ACM/ICPC World Finals 2011 Batch 1
simurgh N/A Tags: Graph Theory, Information Theory, Trees Simurgh IOI 2017 Interactive 1
alternating N/A Tags: Dynamic Programming, Greedy alternating BOI 2018 Batch 1
minedges N/A Tags: Graph Theory Minimizing Edges USACO 2021 February Contest, Platinum Batch 1
shortcut N/A Tags: Binary Search, Graph Theory, Line Sweep/Sliding Window Shortcut IOI 2016 Interactive 1
redblue N/A Tags: Constructive Algorithms, Graph Theory, Trees redblue Dunjudge Archive Batch 1
longesttrip N/A Tags: Graph Theory, Information Theory Longest Trip IOI 2023 (Day 1) Interactive 1
dynamicdiameter2 N/A Tags: Graph Theory, Trees Dynamic Diameter 2 RMI 2020 Batch 1
kamion N/A Tags: Dynamic Programming kamion COCI 2010/2011 Batch 1
naturalpark N/A Tags: Graph Theory, Information Theory naturalpark JOISC 2017 Interactive 1
game_ioi13 N/A Tags: Data Structures, Explicitly Excluded (from IOI) game IOI 2013 Interactive 1
usefft3 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 3 Valentine's Day Contest 2022 (errorgorn) Batch 1
evolution N/A Tags: Graph Theory, Trees Evolution Korean IOI Selection Day 1 Batch 1
arrangement N/A Tags: Data Structures, Dynamic Programming, Greedy arrangement LOJ #3327 Batch 1
robotcontest N/A Tags: Adhoc, Constructive Algorithms, Graph Theory Robot Contest IOI 2023 (Day 2) Interactive 1
beechtree N/A Tags: Graph Theory, Trees Beech Tree IOI 2023 (Day 2) Interactive 1
thief N/A Tags: Dynamic Programming thief Dunjudge Archive Batch 1
maxmex N/A Tags: Data Structures, Graph Theory, Trees Max Mex Dunjudge Archive Batch 1
morefun N/A Tags: Dynamic Programming Even more fun CPSPC 2010 Batch 1
wheelofmisfortune N/A Tags: Adhoc, Brute Force, Math Wheel of Misfortune IOI 2020 Practice Session Batch 1