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 705
addition N/A Tags: Syntax Addition of 2 numbers Classic problem Batch 599
exam N/A Tags: Syntax Exam RI Nov Sel 2020 (syy) Batch 542
sumint N/A Tags: Syntax Sum of Integers Dunjudge Archive Batch 499
maximum N/A Tags: Syntax Maximum Dunjudge Archive Batch 481
gcd N/A Tags: Math, Syntax Greatest Common Divisor Classic Problem Batch 427
lunchbox N/A Tags: Greedy Lunch Box NOI 2016 Batch 405
3nplus1 N/A Tags: Syntax 3nplus1 Classic Problem Batch 392
psle N/A Tags: Syntax Old PSLE Grading System Classic Problem Batch 359
fibo N/A Tags: Dynamic Programming, Math Fibonacci Classic Problem Batch 345
evenorodd N/A Tags: Syntax evenorodd Classic Problem Batch 343
boxispull N/A Tags: Adhoc, Syntax Box is Pull Codeforces Raif Round 1 (bensonlzl) Batch 343
flamethrower N/A Tags: Brute Force Flame Thrower Dunjudge Archive Batch 323
fizzbuzz N/A Tags: Math, Syntax FizzBuzz Classic Problem Batch 320
rightangtri N/A Tags: Syntax rightangtri Classic Problem Batch 296
prime N/A Tags: Math Prime Numbers Classic Problem Batch 289
adjmatrix N/A Tags: Graph Theory Adjacency Matrix Dunjudge Archive Batch 283
brick N/A Tags: Data Structures brick Dunjudge Archive Batch 278
smurf N/A Tags: Brute Force, Syntax smurf RI Deccourse 2018 Selection Test (tch1001) Batch 273
card N/A Tags: Data Structures Card NOI 2010 Batch 271
potatosalad N/A Tags: Greedy potatosalad Classic Problem Batch 269
adjlist N/A Tags: Graph Theory Adjacency List Dunjudge Archive Batch 261
xmas N/A Tags: Syntax xmas NOI 2009 Batch 253
minimum N/A Tags: Syntax minimum Classic Problem Interactive 253
paint N/A Tags: Greedy paint NOI 2011 Batch 252
lis_easy N/A Tags: Dynamic Programming lis_easy Classic problem Batch 243
contestcalc N/A Tags: Math, Syntax contestcalc Dunjudge Archive Batch 240
lengthsort N/A Tags: Syntax lengthsort Dunjudge Archive Batch 225
simp N/A Tags: Adhoc, Brute Force Simp Codeforces 1033A Batch 223
exponentiate N/A Tags: Math Exponentiate Classic Problem Batch 217
timeexam N/A Tags: Math, Syntax What's the Time? RI November Course Stage 2 Selection Test 2021 (ryangohca) Batch 210
guanine N/A Tags: Data Structures guanine Dunjudge Archive Batch 208
subgraphs N/A Tags: Graph Theory Subgraphs Dunjudge Archive Batch 207
3nplus1II N/A Tags: Syntax 3nplus1II Classic Problem Batch 206
cuberoot N/A Tags: Binary Search, Math, Syntax cuberoot Classic Problem Batch 204
weddingcoins N/A Tags: Greedy weddingcoins Dunjudge Archive Batch 198
bracketex N/A Tags: Data Structures, Syntax bracketex Dunjudge Archive Batch 195
arrayfind N/A Tags: Binary Search arrayfind Dunjudge Archive Batch 193
medianstring N/A Tags: Syntax medianstring Dunjudge Archive Batch 193
pigeons N/A Tags: Brute Force pigeons Classic Problem Batch 191
splithunny N/A Tags: Graph Theory splithunny Dunjudge Archive Batch 186
diamond N/A Tags: Syntax diamond Classic Problem Batch 185
descsort N/A Tags: Syntax descsort Dunjudge Archive Batch 183
nprime N/A Tags: Brute Force, Math Prime NOI 2008 Batch 183
gecko N/A Tags: Dynamic Programming gecko NOI 2008 Batch 180
binarycoins N/A Tags: Bitmask, Greedy, Syntax binarycoins Dunjudge Archive Batch 178
segmenttree N/A Tags: Data Structures Segment Tree Classic problem Batch 176
catlunch N/A Tags: Data Structures, Greedy catlunch RI/RJC NOI Selection Test 2016 Batch 173
lvm N/A Tags: Brute Force, Data Structures lvm NOI 2008 Batch 166
prefixsums N/A Tags: Dynamic Programming, Syntax prefixsums Classic Problem (YeoBL20) Batch 159
GSS N/A Tags: Greedy GSS Dunjudge Archive Batch 157
flybot N/A Tags: Dynamic Programming flybot Dunjudge Archive Batch 155
area N/A Tags: Syntax area Dunjudge Archive Batch 154
frogs N/A Tags: Syntax Frogs Winter Computer School 2010/11 Team Contest #1 Batch 152
wabot N/A Tags: Greedy wabot December Course 2019 Advanced Final Contest (bensonlzl) Batch 150
uniquenumbers N/A Tags: Data Structures uniquenumbers Classic Problem Batch 149
lcs N/A Tags: Dynamic Programming lcs Classic problem Batch 149
beareatrabbit N/A Tags: Dynamic Programming Bear Eat Rabbit Classic Problem Batch 148
lis N/A Tags: Binary Search, Dynamic Programming Longest Increasing Subsequence Classic problem Batch 148
mrt N/A Tags: Graph Theory MRT Dunjudge Archive Batch 147
car N/A Tags: Graph Theory car Dunjudge Archive Batch 146
catfight N/A Tags: Line Sweep/Sliding Window catfight Dunjudge Archive Batch 145
typo N/A Tags: Syntax Typo ABC221 Batch 145
addition2 N/A Tags: Joke Addition? Hello 2022 (oolimry) Batch 145
ccs N/A Tags: Data Structures ccs Dunjudge Archive Batch 136
bestplace N/A Tags: Greedy, Syntax bestplace NOI 2017 Batch 136
illuminate N/A Tags: Math, Syntax Illuminate RI-HCI NOI Selection Test 2020 (bensonlzl) Batch 135
pairsums N/A Tags: Syntax Button Pairs UWCOI 2020 (socho, astoria, kimbj0709) Batch 135
milkweed N/A Tags: Graph Theory milkweed Dunjudge Archive Batch 135
competition N/A Tags: Greedy competition NOI 2021 Qualification Batch 133
moneychanger N/A Tags: Dynamic Programming moneychanger Dunjudge Archive Batch 130
gotoschool N/A Tags: Syntax Go To School ABC142 Batch 129
stepgame N/A Tags: Dynamic Programming, Greedy stepgame Classic Problem Batch 123
greeting N/A Tags: Syntax CNY Greetings 2020 CNY (errorgorn) Batch 121
coinbag N/A Tags: Dynamic Programming coinbag Dunjudge Archive Batch 121
foreveralone N/A Tags: Data Structures foreveralone Dunjudge Archive Batch 120
primefactorization N/A Tags: Math primefactorization Dunjudge Archive Batch 118
candymountain_ex N/A Tags: Data Structures, Dynamic Programming candymountain_ex Dunjudge Archive Batch 117
general N/A Tags: Graph Theory general Classic Problem Batch 116
countalp N/A Tags: Syntax countalp Classic Problem Batch 116
squidzofrenzic N/A Tags: Binary Search squidzofrenzic Dunjudge Archive Batch 115
medianheap N/A Tags: Data Structures medianheap Dunjudge Archive Batch 115
swapsort N/A Tags: Adhoc Swap Sort HCI December Course Selection 2021 (kai824, pavement) Batch 115
fenwicktree N/A Tags: Data Structures fenwicktree Classic Problem Batch 114
pandaeyes N/A Tags: Greedy pandaeyes Dunjudge Archive Batch 114
dijkstra N/A Tags: Graph Theory dijkstra Dunjudge Archive Batch 112
eeducation N/A Tags: Syntax Elementary Education Dec Course 2021 Elementary Final Contest (shenxy13) Batch 112
lineup N/A Tags: Line Sweep/Sliding Window lineup USACO Silver Nov 2011 Batch 111
clocktower N/A Tags: Math, Syntax Clock Tower RI December Course Selection Test 2021 (Deadeye) Batch 108
management N/A Tags: Syntax Management ABC163C Batch 106
4sum N/A Tags: Meet in the Middle 4sum NOI 2008 Batch 105
carpark N/A Tags: Greedy carpark Dunjudge Archive Batch 104
segmenttree2 N/A Tags: Data Structures Segment Tree 2 Classic Problem Batch 104
buffet N/A Tags: Dynamic Programming buffet Dunjudge Archive Batch 104
ljubomora N/A Tags: Binary Search ljubomora COCI 2012/2013 Batch 104
speakers N/A Tags: Greedy speakers Dunjudge Archive Batch 103
1609 N/A Tags: Joke 1609 April Fools' 2021 (0rang3) Batch 102
stonk N/A Tags: Greedy Stonks Dec Trg 2019 (Elementary) (shenxy13) Batch 102
summit N/A Tags: Binary Search summit Dunjudge Archive Batch 101
snack N/A Tags: Dynamic Programming, Greedy snack Dunjudge Archive Batch 99
rmaxq N/A Tags: Data Structures Range Max Query Dunjudge Archive Batch 98
reciprocals N/A Tags: Constructive Algorithms, Syntax Reciprocals HCI December Course Selection 2021 (huangqr, pavement) Batch 98
hedgehogcrimes_easy N/A Tags: Dynamic Programming Hedgehog Crimes (Easy Version) Classic Problem Batch 98
pascal N/A Tags: Dynamic Programming, Math pascal Dunjudge Archive Batch 98
subtaskstitching N/A Tags: Joke subtaskstitching Codebreaker Development Batch 98
fuel N/A Tags: Greedy fuel Dunjudge Archive Batch 96
scalars N/A Tags: Greedy scalars Dunjudge Archive Batch 96
trains N/A Tags: Dynamic Programming trains Dunjudge Archive Batch 96
floors N/A Tags: Data Structures floors Dunjudge Archive Batch 93
omnomnom N/A Tags: Dynamic Programming, Graph Theory, Trees omnomnom Classic Problem Batch 92
ancestor N/A Tags: Dynamic Programming, Graph Theory, Trees ancestor Classic problem Batch 92
fractions N/A Tags: Syntax fractions Classic Problem (YeoBL20) Batch 91
coincombinations N/A Tags: Dynamic Programming coincombinations Classic Problem Batch 90
mountains N/A Tags: Data Structures Mountains NOI 2020 Prelims Batch 90
lightningrod N/A Tags: Adhoc, Data Structures LightningRod NOI 2018 Batch 90
universe N/A Tags: Graph Theory, Trees universe Dunjudge Archive Batch 89
sealevel N/A Tags: Graph Theory sealevel Dunjudge Archive Batch 89
gift N/A Tags: Syntax gift NOI 2007 Batch 89
helloworld2 N/A Tags: Joke Hello World? Hello 2022 (jamessng) Batch 89
collectmushrooms6 N/A Tags: Dynamic Programming CollectMushrooms NOI 2018 Batch 87
bananasmoothie N/A Tags: Greedy Banana Smoothie Dunjudge Archive (shenxy13) Batch 87
sightseeing N/A Tags: Graph Theory, Trees sightseeing NOI 2014 Batch 86
poi N/A Tags: Syntax poi IOI 2009 Batch 84
globalwarming N/A Tags: Line Sweep/Sliding Window Global Warming NOI 2013 Batch 84
collectmushrooms N/A Tags: Syntax collectmushrooms Dunjudge Archive Batch 83
twomeals N/A Tags: Brute Force, Dynamic Programming, Greedy twomeals Dunjudge Archive Batch 83
eescapism N/A Tags: Adhoc, Math Elementary Escapism Dec Course 2021 Elementary Final Contest (shenxy13) Batch 83
payraise N/A Tags: Graph Theory payraise Dunjudge Archive Batch 82
neckties N/A Tags: Data Structures, Greedy Just Long Neckties JOI 2020 Final Round Batch 81
oranges2 N/A Tags: Graph Theory, Trees oranges2 RI Deccourse 2018 Selection Test (0rang3) Batch 81
typicalstairs N/A Tags: Dynamic Programming Typical Stairs ABC 129 Batch 81
potatotree N/A Tags: Data Structures potatotree RI Nov Sel 2020 (syy) Batch 80
amicablecats N/A Tags: Math, Syntax amicablecats Dunjudge Archive Batch 80
arrayproblem N/A Tags: Greedy arrayproblem Codeforces Batch 80
boundlessboxes N/A Tags: Graph Theory boundlessboxes Dunjudge Archive Batch 80
entropy N/A Tags: Greedy, Syntax entropy RI-HCI December Course Selection 2020 (0rang3) Batch 79
party N/A Tags: Data Structures, Graph Theory party Dunjudge Archive Batch 78
pushups N/A Tags: Math pushups Dunjudge Archive Batch 77
rotarylock N/A Tags: Data Structures rotarylock HCI NOI Selection Test 2015 Batch 76
grid N/A Tags: Dynamic Programming Grid Atcoder Educational DP Contest Batch 76
magicwand N/A Tags: Graph Theory magicwand Dunjudge Archive Batch 76
sandd N/A Tags: Binary Search sandd Classic Problem Interactive 75
cups N/A Tags: Data Structures cups Deccourse 2021 DS II Contest (errorgorn) Batch 74
dinowalk N/A Tags: Graph Theory dinowalk Classic Problem Batch 74
chessislands N/A Tags: Graph Theory chessislands NOI 2010 Selection Test Batch 74
taxcollection N/A Tags: Greedy, Syntax taxcollection RI-HCI December Course Selection 2020 (JustAWallaby) Batch 74
hashcollision N/A Tags: Joke Hash Collision Hello 2021 (shenxy13) Interactive 74
zooqueue N/A Tags: Data Structures Zoo Queue NUS December Training 2021 Diagnostic Test (shenxy13) Batch 73
pigeonhole N/A Tags: Data Structures pigeonhole Dunjudge Archive Batch 73
badpotato N/A Tags: Dynamic Programming badpotato Dunjudge Archive Batch 73
leftright N/A Tags: Data Structures Left and Right Dec Trg 2019 (Elementary) (oolimry) Batch 73
omnomnom2 N/A Tags: Graph Theory, Trees omnomnom2 Classic Problem Batch 72
smallprimes N/A Tags: Brute Force, Math Small Primes Classic Problem Batch 72
conversations N/A Tags: Data Structures Zookeeper's Conversations Singapore Zoo (shenxy13) Batch 72
inversions N/A Tags: Data Structures, Divide and Conquer inversions Dunjudge Archive Batch 71
conversations_easy N/A Tags: Data Structures Zookeeper's Conversations (Easy Version) RI-HCI December Course Selection 2020 (shenxy13) Batch 70
eelimination N/A Tags: Data Structures Elementary Elimination Dec Course 2021 Elementary Final Contest (shenxy13) Batch 70
rank N/A Tags: Graph Theory rank NOI 2008 Batch 70
housing N/A Tags: Dynamic Programming housing NOI 2008 Batch 69
01knapsack N/A Tags: Dynamic Programming 0-1 Knapsack Classic problem (Atcoder Educational DP Contest) Batch 69
1821 N/A Tags: Constructive Algorithms, Graph Theory, Joke, Trees 1821 April Fools' 2021 (zaneyu) Batch 68
nihonese N/A Tags: Syntax nihonese ISC 2020 practice (errorgorn) Batch 68
transform N/A Tags: Brute Force, Dynamic Programming, Graph Theory transform Dunjudge Archive Batch 68
telepathy N/A Tags: Joke Friendly Telepathy April Fools' 2022 (0rang3) Batch 67
candies N/A Tags: Data Structures candies Dunjudge Archive Batch 66
labels N/A Tags: Adhoc labels NOI 2020 Finals Batch 66
palindromicfizzbuzz N/A Tags: Syntax Palindromic FizzBuzz NOI 2019 Prelims Batch 65
7up N/A Tags: Syntax 7up RI November Course Stage 2 Selection Test 2019 Batch 65
f7 N/A Tags: Greedy F7 COCI 2012/2013 Batch 65
solonim N/A Tags: Math, Syntax Solo Nim Dunjudge Archive Batch 65
workload N/A Tags: Dynamic Programming December Training Workload Classic Problem Batch 65
dyingpolynomial N/A Tags: Binary Search Dying Polynomial RI Nov Sel 2020 (JustAWallaby) Batch 64
rabbiteatrabbit N/A Tags: Dynamic Programming rabbiteatrabbit Dec Trg 2019 (Elementary) (jamielim) Batch 64
sort N/A Tags: Adhoc sort Classic Problem? Batch 63
4russians N/A Tags: Dynamic Programming 4russians RI-HCI NOI Selection Test 2020 (jamielim) Batch 63
lcm N/A Tags: Math lcm Classic Problem Batch 62
knightmoves N/A Tags: Graph Theory knightmoves Dunjudge Archive Batch 62
razlika N/A Tags: Data Structures, Line Sweep/Sliding Window razlika Dunjudge Archive Batch 62
collectmushrooms2 N/A Tags: Data Structures collectmushrooms2 Dunjudge Archive Batch 62
assembly N/A Tags: Dynamic Programming assembly Dunjudge Archive Batch 62
watching N/A Tags: Binary Search, Dynamic Programming watching JOI Open 2013 Batch 61
generosity N/A Tags: Joke Generosity April Fools' 2022 (oolimry) Batch 61
pilot N/A Tags: Adhoc, Data Structures pilot NOI 2019 Batch 61
nemo N/A Tags: Graph Theory nemo Dunjudge Archive Batch 61
optmilk N/A Tags: Data Structures, Dynamic Programming Optimal Milking Dunjudge Archive Batch 60
heatwv N/A Tags: Graph Theory Heat Wave Dunjudge Archive Batch 60
wabbit N/A Tags: Greedy wabbit RI-HCI-NUSH NOI Selection Test 2021 (oolimry) Batch 60
minstack N/A Tags: Data Structures minstack Dunjudge Archive Interactive 60
routers N/A Tags: Greedy routers Dunjudge Archive Batch 60
roadsideadverts N/A Tags: Dynamic Programming, Graph Theory, Trees roadsideadverts NOI 2017 Batch 60
bananafarm N/A Tags: Data Structures bananafarm NOI 2015 Batch 60
chinese N/A Tags: Syntax chinese Dunjudge Archive Batch 59
727 N/A Tags: Greedy, Math 727 HCI-NUSH NOI Selection 2022 (errorgorn) Batch 58
hamster1 N/A Tags: Dynamic Programming Hamster's Journey Atcoder Educational DP Contest Batch 58
problematicjourney N/A Tags: Binary Search, Graph Theory Problematic Journey Classic Problem Batch 57
spellofweakness N/A Tags: Binary Search, Greedy, Line Sweep/Sliding Window Spell Of Weakness Dunjudge Archive (dantoh) Batch 57
eevacuation N/A Tags: Dynamic Programming, Graph Theory Elementary Evacuation Dec Course 2021 Elementary Final Contest (shenxy13) Batch 57
explosion N/A Tags: Math explosion Classic Problem Batch 56
snakenladder N/A Tags: Dynamic Programming snakenladder Dunjudge Archive Batch 56
singlefile N/A Tags: Data Structures singlefile Dunjudge Archive Batch 56
peakfinding N/A Tags: Syntax Peak Finding UWCOI 2020 (socho, astoria, kimbj0709) Batch 56
ballot N/A Tags: Data Structures ballot Dunjudge Archive Batch 56
inheritance N/A Tags: Graph Theory inheritance JOI 2014/2015 Batch 56
bobek N/A Tags: Bitmask, Meet in the Middle bobek CEOI 2015 Batch 55
deque N/A Tags: Dynamic Programming Deque AtCoder Educational DP Contest Batch 55
lol N/A Tags: Dynamic Programming lol Dunjudge Archive Batch 54
coke N/A Tags: Dynamic Programming, Greedy Coke NUSH ISC 2020 (errorgorn) Batch 54
supplies N/A Tags: Graph Theory supplies Dunjudge Archive Batch 53
employee N/A Tags: Graph Theory, Trees employee Dunjudge Archive Batch 53
abbb N/A Tags: Greedy abbb Codeforces Raif Round 1 (errorgorn) Batch 53
cookieclickeralpha N/A Tags: Math, Syntax cookieclickeralpha Google Code Jam 2014 Batch 52
coinjourney N/A Tags: Binary Search Coin Journey RI November Course Stage 2 Selection Test 2021 (kym) Batch 52
entropy2 N/A Tags: Adhoc, Brute Force entropy2 RI December Course Selection Test 2021 (kym) Batch 51
unmerge N/A Tags: Dynamic Programming Unmerge Codeforces 1381B Batch 51
padoru N/A Tags: Graph Theory Hashire Sori Yo! Dec Course 2020 BAPS (peaceknight05) Batch 51
flights N/A Tags: Graph Theory flights Dunjudge Archive Batch 51
workoutplan N/A Tags: Greedy Workout plan Bubble Cup 12 Div 1 Batch 50
pandacity N/A Tags: Graph Theory pandacity Dunjudge Archive Batch 50
commando N/A Tags: Dynamic Programming commando APIO 2010 Batch 50
nis N/A Tags: Data Structures, Dynamic Programming nis Dunjudge Archive Batch 50
localexpress N/A Tags: Dynamic Programming localexpress AtCoder Typical DP Contest Batch 49
papaya N/A Tags: Graph Theory papaya Dunjudge Archive Batch 49
flappyrabbit N/A Tags: Greedy Flappy Rabbit HCI-NUSH NOI Selection 2022 (pavement) Interactive 49
train N/A Tags: Dynamic Programming train Dunjudge archive Batch 49
sightseeing2 N/A Tags: Graph Theory, Trees sightseeing2 RI NOI Selection Test 2015 Batch 48
hacking N/A Tags: Graph Theory Hacking Classic problem (fyss006) Batch 47
carrots N/A Tags: Greedy carrots Codeforces Raif Round 1 (errorgorn) Batch 47
wormholes N/A Tags: Dynamic Programming wormholes Dunjudge Archive Batch 47
levelingup N/A Tags: Dynamic Programming Leveling Up RI November Course Stage 2 Selection Test 2021 (ryangohca) Batch 47
towerdefense N/A Tags: Graph Theory towerdefense Dunjudge Archive Batch 47
harddisk N/A Tags: Bitmask, Brute Force, Meet in the Middle harddisk 2015 NOI Training Problem-Setter Contest Batch 46
leave N/A Tags: Data Structures leave Dunjudge Archive Batch 46
lboard N/A Tags: Brute Force, Dynamic Programming L-Board NOI 2022 Qualification Batch 46
stickytape N/A Tags: Greedy Sticky Tape Classic Problem Batch 45
logs N/A Tags: Binary Search logs AtCoder Batch 45
digits N/A Tags: Data Structures digits Deccourse 2021 DS II Contest (errorgorn) Batch 45
rblock N/A Tags: Graph Theory rblock USACO 2011 December Contest, Silver Division Batch 45
graphcraft N/A Tags: Graph Theory graphcraft Dunjudge Archive Interactive 45
vainish N/A Tags: Dynamic Programming Vanish 2015-2016 NOI Training Diagnostic Test Batch 45
walking N/A Tags: Dynamic Programming walking NOI 2012 Batch 44
railway N/A Tags: Graph Theory, Trees railway CPSPC 2004 Batch 44
greenbeans N/A Tags: Adhoc, Implementation Cancer, Math, Syntax Green Beans Mayhem RI November Course Stage 2 Selection Test 2021 (ryangohca, kym) Batch 44
quillvsowl N/A Tags: Adhoc, Line Sweep/Sliding Window Quill Vs Owl Dec Course 2020 BAPS (jamielim) Batch 44
letters N/A Tags: Dynamic Programming letters Dunjudge Archive Batch 44
replacedigits N/A Tags: Data Structures Replace Digits ACL Beginner Contest Batch 44
picnic N/A Tags: Binary Search, Greedy Picnic Codeforces Global Round 17 Batch 44
fruitsequences N/A Tags: Adhoc, Data Structures Fruit Sequences Codeforces Raif Round 1 (bensonlzl) Batch 43
christmasfeast N/A Tags: Adhoc Christmas Feast Educational Round 2 (errorgorn) Batch 43
stamps N/A Tags: Dynamic Programming stamps Dunjudge Archive Batch 43
summarising2020 N/A Tags: Information Theory, Joke Summarising 2020 Hello 2021 (shenxy13) Interactive 43
penguinfood N/A Tags: Data Structures penguinfood Dunjudge Archive Batch 43
becomingred N/A Tags: Joke Becoming Red ඞ ඞ ඞ Hello 2022 (oolimry) Batch 42
oridance N/A Tags: Dynamic Programming Orientation Dance Codeforces 1509C Batch 42
towers N/A Tags: Data Structures, Dynamic Programming towers Codeforces 474E Batch 42
bracketsyndrome N/A Tags: Adhoc, Data Structures Bracket Syndrome RI-HCI NOI Selection Test 2019 Batch 42
boundedpermutation N/A Tags: Adhoc, Dynamic Programming, Math Bounded Permutation HCI-NUSH NOI Selection 2022 (maomao90) Batch 41
travel N/A Tags: Greedy Travel CCO 2015 Batch 41
lunchcombo N/A Tags: Binary Search, Greedy lunchcombo RI November Course Stage 2 Selection Test 2019 Batch 41
catchingcheaters N/A Tags: Dynamic Programming Catching Cheaters Codeforces Round 683 (Div 1) Batch 40
dotjoin N/A Tags: Graph Theory, Trees dotjoin Dunjudge Archive Batch 40
lostarray N/A Tags: Adhoc, Constructive Algorithms Lost Array NOI 2019 Prelims Batch 40
drones N/A Tags: Graph Theory Drones HCI December Course Selection 2021 (cstuart) Batch 40
optimalsubseq N/A Tags: Binary Search, Data Structures optimalsubseq Codeforces 1227D2 Batch 40
construct N/A Tags: Dynamic Programming, Graph Theory Constructing Birthday Presents RI-HCI-NUSH NOI Selection Test 2021 (0rang3) Batch 40
ljll N/A Tags: Math LJLL NUSH ISC 2020 (errorgorn) Batch 39
variety N/A Tags: Dynamic Programming variety RI November Course Stage 2 Selection Test 2019 Batch 39
snapknack N/A Tags: Dynamic Programming snapknack Dunjudge Archive Batch 38
runway N/A Tags: Binary Search, Graph Theory Jianzhi’s Runway Show RI NOI Selection Test 2017 Batch 38
eatcake N/A Tags: Divide and Conquer Eating Cake Educational Codeforces Round 94 Batch 38
divisibility N/A Tags: Dynamic Programming divisibility Dunjudge Archive Batch 37
exponentiate_ex N/A Tags: Math exponentiate_ex Classic Problem Batch 37
sherlockinversions N/A Tags: Data Structures, Square Root Decomposition sherlockinversions Dunjudge Archive Batch 37
ihate1111 N/A Tags: Adhoc, Math I Hate 1111 Codeforces Round 723 (errorgorn) Batch 37
bosses N/A Tags: Brute Force, Graph Theory, Greedy, Trees bosses BOI 2016 Batch 37
collectmushrooms3 N/A Tags: Data Structures collectmushrooms3 Dunjudge Archive Batch 37
peddler N/A Tags: Dynamic Programming, Graph Theory Peddler ABC 188 Batch 37
binaryroads N/A Tags: Graph Theory binaryroads Dunjudge Archive Batch 37
penguinislands N/A Tags: Dynamic Programming, Graph Theory penguinislands Dunjudge Archive Batch 36
fraud N/A Tags: Adhoc, Math fraud NOI 2021 Finals Batch 36
ballgame N/A Tags: Data Structures, Dynamic Programming ballgame Dunjudge Archive Interactive 36
0405 N/A Tags: Joke, Math 0405 April Fools' 2021 (zaneyu) Batch 36
ping N/A Tags: Joke ping RI HCI NOI Selection 2019 Practice (bensonlzl) Interactive 36
smurfpaths N/A Tags: Data Structures, Graph Theory, Trees smurfpaths RI-HCI NOI Selection Test 2020 (rs) Batch 36
supermarket N/A Tags: Data Structures, Line Sweep/Sliding Window supermarket RI Dec Course Sel 2017 Batch 36
poklon N/A Tags: Data Structures, Square Root Decomposition poklon COCI 2016/2017 Batch 36
guessqueue N/A Tags: Brute Force, Data Structures Guess the Queue Kattis (modified) (ryangohca) Batch 36
numericalstrings N/A Tags: Greedy, Math numericalstrings RI November Course Stage 2 Selection Test 2019 Batch 36
skillmoves N/A Tags: Data Structures, Greedy skillmoves RI November Course Stage 2 Selection Test 2019 Batch 36
crypto N/A Tags: Data Structures crypto NOI 2020 Qualification Batch 35
clique N/A Tags: Data Structures clique Algorithm Class Mini-Contest 8 Batch 35
manycolours N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees manycolours ABC 133 Batch 35
dna_ioi N/A Tags: Adhoc Mutating DNA IOI 2021 Interactive 35
fireandbeary N/A Tags: Graph Theory fireandbeary Dunjudge Archive (jamielim) Batch 35
foodchain N/A Tags: Math, Syntax Food Chain Dec Trg 2019 (Elementary) Batch 33
goinghome_agc N/A Tags: Data Structures, Greedy goinghome_agc AGC 023 Batch 33
orchard N/A Tags: Dynamic Programming, Line Sweep/Sliding Window orchard NOI 2014 Batch 33
spaceinvaders N/A Tags: Brute Force, Data Structures, Dynamic Programming, Line Sweep/Sliding Window spaceinvaders Educational Round 1 (bensonlzl) Batch 33
mandarins N/A Tags: Math Mandarins 2020 CNY Batch 33
rectangleoutline N/A Tags: Dynamic Programming, Line Sweep/Sliding Window Rectangle Outline USACO 2016 January Contest, Platinum Batch 33
justright N/A Tags: Binary Search justright Dunjudge Archive Batch 33
hoofpaperscissor N/A Tags: Dynamic Programming Hoof, Paper, Scissors USACO 2017 January Contest, Gold Batch 33
restaurant N/A Tags: Greedy restaurant Dunjudge Archive Batch 33
sterilizing N/A Tags: Data Structures sterilizing JOI 2014/15 Batch 32
monopoly N/A Tags: Dynamic Programming monopoly Dunjudge Archive Batch 32
lineup2 N/A Tags: Syntax Lineup RI Problem Setter Contest 2019 (rs) Batch 32
cheerleaders N/A Tags: Dynamic Programming cheerleaders Atcoder Educational DP Contest Batch 32
pairs N/A Tags: Binary Search pairs AtCoder Beginner Contest 155 Batch 32
rainbowrabbit N/A Tags: Adhoc, Greedy rainbowrabbit RI-HCI December Course Selection 2019 (bensonlzl) Batch 32
singleflip N/A Tags: Syntax Single Flip TROC 24 (maomao90) Batch 32
guards N/A Tags: Dynamic Programming Guards Dunjudge archive Batch 31
growingtrees N/A Tags: Binary Search, Data Structures growingtrees BOI 2011 Batch 31
1503 N/A Tags: Adhoc, Joke 1503 April Fools' 2021 (jamielim) Batch 31
ladybugs N/A Tags: Dynamic Programming ladybugs Dunjudge Archive Batch 31
erp N/A Tags: Graph Theory erp Dunjudge Archive Batch 31
swimming N/A Tags: Graph Theory Constructing a Swimming Pool RI-HCI-NUSH NOI Selection Test 2021 (0rang3) Batch 31
deathray N/A Tags: Data Structures deathray Dec Trg 2019 (Elementary) (shenxy13) Batch 30
iqtest N/A Tags: Math iqtest Valentine's Day Contest 2022 (errorgorn) Batch 30
charges N/A Tags: Graph Theory Experimental Charges NOI 2019 Prelims Batch 30
commonsubstring N/A Tags: Dynamic Programming commonsubstring Dunjudge Archive Batch 30
aircon N/A Tags: Data Structures aircon Codeforces Round #757 (Div. 2) Batch 29
frog3 N/A Tags: Dynamic Programming Frog 3 Atcoder Educational DP Contest Batch 29
performance N/A Tags: Math Performance NUSH ISC 2020 (oolimry) Batch 29
brackets N/A Tags: Greedy, Slope Trick Bracket Subsequence Classic Problem (zengminghao) Batch 29
scanner N/A Tags: Dynamic Programming scanner Dunjudge Archive Batch 29
lemmas N/A Tags: Graph Theory lemmas Educational Round 1 (errorgorn) Batch 28
applefarm N/A Tags: Graph Theory applefarm NUSH ISC 2020 (oolimry) Batch 28
buycomputer N/A Tags: Greedy, Syntax buycomputer Dec Trg 2019 (Elementary) (errorgorn) Batch 28
nonboringsequences N/A Tags: Divide and Conquer nonboringsequences Dunjudge Archive Batch 28
armpit N/A Tags: Adhoc armpit RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 28
convexhull N/A Tags: Data Structures Convex Hull Classic Problem (ryangohca) Batch 28
levenshtein N/A Tags: Dynamic Programming levenshtein Classic problem Batch 28
fractionalmultiset N/A Tags: Dynamic Programming Fractional Multiset ARC 107 Batch 28
ferries N/A Tags: Graph Theory ferries NOI 2013 Batch 28
subknapsack N/A Tags: Dynamic Programming Knapsack for All Subsets Atcoder Beginner Contest 169 Batch 28
feedthewallabies N/A Tags: Graph Theory Feed the Wallabies RI December Course Selection Test 2021 (syy) Batch 28
firelord N/A Tags: Dynamic Programming firelord RI Nov Sel 2020 (jiahng) Batch 27
numbers N/A Tags: Dynamic Programming Palindrome-Free Numbers BOI 2013 Batch 27
modsum N/A Tags: Dynamic Programming, Math modsum NOI 2012 Batch 27
bunnyscore N/A Tags: Adhoc, Data Structures bunnyscore RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Interactive 27
dice N/A Tags: Math Dice Dec Course 2021 BAPS (origami100, dillion) Batch 27
election N/A Tags: Data Structures, Dynamic Programming election Dunjudge Archive Batch 27
examinations N/A Tags: Data Structures examinations JOI Batch 27
beautifulbrackets N/A Tags: Dynamic Programming Beautiful Bracket Sequence Codeforces 1264D1 Batch 26
lasers N/A Tags: Adhoc, Data Structures lasers NOI 2019 Batch 26
mathtree N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Implementation Cancer, Trees Math Tree SGP Sparring 2021 (lovemathboy) Batch 26
wallabyhop N/A Tags: Data Structures, Line Sweep/Sliding Window Wallaby Hop RI December Course Selection Test 2021 (jiahng) Batch 26
smallprimes_ex N/A Tags: Meet in the Middle Small Primes? Classic Problem? Batch 26
stackweights N/A Tags: Data Structures stackweights CSES Problem Set Batch 26
basketball N/A Tags: Binary Search, Greedy basketball NUSH ISC 2020 (dantoh) Batch 26
square_ioi N/A Tags: Dynamic Programming square_ioi IOI 2014 Practice Interactive 26
stones N/A Tags: Graph Theory, Trees stones Dunjudge Archive Batch 25
bracketsuperseq N/A Tags: Dynamic Programming Shortest Bracket Supersequence Codeforces 1272F Batch 25
christmaxtrees N/A Tags: Graph Theory, Greedy christmaxtrees Codeforces 1283D Batch 25
bacteria N/A Tags: Data Structures bacteria Dunjudge Archive Batch 25
bridge_apio15 N/A Tags: Data Structures Palembang Bridges APIO 2015 Batch 25
naptime N/A Tags: Graph Theory, Greedy naptime RI-HCI December Course Selection 2020 (cstuart) Batch 25
badnim N/A Tags: Explicitly Excluded (from IOI), Math badnim Educational Round 7 (errorgorn) Batch 25
appeal N/A Tags: Data Structures appeal Dunjudge Archive Batch 25
simcity N/A Tags: Graph Theory simcity Dunjudge Archive Batch 25
discharging N/A Tags: Data Structures, Dynamic Programming discharging NOI 2020 Finals Batch 25
lfs N/A Tags: Dynamic Programming, Math Longest Factor Subsequence Educational Round 5 (errorgorn) Batch 25
cardtrick N/A Tags: Data Structures Card Trick Classic Problem (oolimry) Batch 25
dquery N/A Tags: Data Structures, Square Root Decomposition dquery Classic Problem Batch 24
bottle N/A Tags: Dynamic Programming, Graph Theory, Trees Bottle Dunjudge Archive Batch 24
girlfriend N/A Tags: Dynamic Programming, Graph Theory girlfriend Dunjudge Archive Batch 24
bank N/A Tags: Bitmask, Dynamic Programming Bank IZhO 2014 Day 1 Batch 24
fuelstation N/A Tags: Data Structures fuelstation NOI 2020 Qualification Batch 24
pavement N/A Tags: Constructive Algorithms, Greedy Painting Pavements HCI December Course Selection 2021 (pavement) Batch 24
treecutting N/A Tags: Brute Force, Graph Theory, Trees Tree Cutting NOI 2022 Qualification Batch 24
smurfberries N/A Tags: Binary Search smurfberries All-Ukrainian School Olympiad in Informatics 2011 Batch 24
doubletrouble N/A Tags: Data Structures, Greedy Double Trouble Dec Trg 2019 (Elementary) (oolimry) Batch 24
lazycat N/A Tags: Bitmask, Dynamic Programming, Graph Theory lazycat Dunjudge Archive Batch 24
knapsack N/A Tags: Dynamic Programming Knapsack NOI 2018 Prelims Batch 24
pigeonnests N/A Tags: Data Structures, Graph Theory, Trees pigeonnests RSA Fun Contest (shenxy13) Batch 24
pokenumbers N/A Tags: Math pokenumbers Dunjudge Archive Batch 24
snakesnack2 N/A Tags: Line Sweep/Sliding Window snakesnack2 RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 24
llis N/A Tags: Dynamic Programming Longest LIS NUSH NOI Selection Test 2018 Batch 24
lps N/A Tags: Dynamic Programming lps Dunjudge Archive Batch 23
gymbadges N/A Tags: Dynamic Programming, Greedy Gym Badges NOI 2022 Finals Batch 23
assignpaths N/A Tags: Binary Search, Graph Theory, Greedy, Trees assignpaths USACO 2020 February Contest, Platinum Batch 23
change N/A Tags: Greedy change NOI 2011 Batch 23
modules N/A Tags: Binary Search, Data Structures, Dynamic Programming, Line Sweep/Sliding Window modules NUSH NOI Selection Test 2018 Batch 23
fortunetelling N/A Tags: Data Structures Fortune Telling 2 JOI 2014 Batch 23
skyline N/A Tags: Graph Theory, Greedy skyline HCI NOI Selection Retest 2020 (bensonlzl) Batch 23
guessarray N/A Tags: Adhoc 4sadfaces Guessing an Array Dec Course 2020 BAPS (zaneyu) Interactive 23
removeelements N/A Tags: Binary Search, Data Structures removeelements Codeforces Round #668 Batch 23
unluckyfloors N/A Tags: Dynamic Programming unluckyfloors NOI 2016 Batch 23
train_ex N/A Tags: Dynamic Programming train_ex Dunjudge Archive Batch 23
goodseq N/A Tags: Data Structures goodseq Dunjudge Archive Batch 23
tour N/A Tags: Bitmask, Dynamic Programming, Graph Theory tour NOI 2011 Batch 23
addone N/A Tags: Dynamic Programming Add One Codeforces 1513C Batch 23
pythonindentation N/A Tags: Dynamic Programming pythonindentation Codeforces 909C Batch 22
primesort N/A Tags: Graph Theory, Math Prime Sort Dunjudge Archive Batch 22
candies_joi N/A Tags: Adhoc, Greedy candies_joi JOI 2017/2018 Spring Camp Batch 22
multipaths N/A Tags: Dynamic Programming, Graph Theory, Trees Multiple Paths Dunjudge Archive Batch 22
primepie N/A Tags: Math primepie Dunjudge Archive Interactive 22
deliveroo N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming, Greedy Deliveroo RI November Course Stage 2 Selection Test 2021 (Deadeye) Batch 22
inversemax N/A Tags: Bitmask, Dynamic Programming inversemax Educational Round 3 (errorgorn) Batch 22
relaymarathon N/A Tags: Brute Force, Graph Theory relaymarathon NOI 2020 Qualification Batch 22
duckduckgo N/A Tags: Greedy duckduckgo Codeforces 1091F Batch 22
history N/A Tags: Dynamic Programming history Dunjudge Archive Batch 22
gridgame N/A Tags: Graph Theory gridgame Dunjudge Archive Batch 22
container N/A Tags: Square Root Decomposition Shipping Containers POI 2017 Round 2 Day 2 Q1 Batch 22
hole N/A Tags: Binary Search, Dynamic Programming hole Dunjudge Archive Batch 22
bucketstacking N/A Tags: Adhoc, Greedy Bucket Stacking RI-HCI-NUSH NOI Selection Test 2021 (oolimry) Batch 22
riggedroads N/A Tags: Graph Theory, Greedy, Trees riggedroads NOI 2019 Batch 22
votingcities N/A Tags: Bitmask, Graph Theory Voting Cities NOI 2022 Finals Batch 22
removeedges N/A Tags: Graph Theory removeedges Atcoder Batch 22
rolling N/A Tags: Dynamic Programming, Graph Theory, Trees Rolling Dunjudge Archive Batch 22
promotion N/A Tags: Data Structures, Graph Theory, Trees Promotion Counting USACO 2017 Jan, Platinum Batch 21
bingo N/A Tags: Adhoc, Constructive Algorithms Bingo Grand Prix of Daejeon Batch 21
rubies N/A Tags: Binary Search rubies Dunjudge Archive (pwypeanut) Batch 21
triusis N/A Tags: Data Structures, Dynamic Programming Rabbit Carrot Lithuanian Olympiad in Informatics 2019 Batch 21
bosubaiko N/A Tags: Adhoc, Greedy Bosu Baiko Educational Round 6 (errorgorn) Batch 21
progression N/A Tags: Data Structures, Implementation Cancer progression NOI 2020 Finals Batch 21
moosic N/A Tags: Data Structures moosic Codeforces Round #386 Batch 21
bracketscore N/A Tags: Greedy bracketscore AGC48 Batch 21
pokeadd N/A Tags: Math pokeadd Dunjudge Archive Batch 21
postcard N/A Tags: Dynamic Programming postcard Codeforces 4D Batch 21
troubles N/A Tags: Adhoc, Data Structures, Dynamic Programming troubles Dunjudge Archive Batch 21
firefighting N/A Tags: Dynamic Programming, Graph Theory, Trees firefighting NOI 2020 Qualification Batch 20
warp N/A Tags: Bitmask, Dynamic Programming warp HCI NOI Selection Retest 2020 (bensonlzl) Batch 20
ducknuggetconvention N/A Tags: Data Structures, Divide and Conquer Duck Nugget Convention Valentines Contest 2021 (oolimry) Batch 20
fruits N/A Tags: Data Structures, Greedy fruits Dunjudge Archive Batch 20
ants N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees ants Dunjudge Archive Interactive 20
xorb N/A Tags: Math, Syntax xorb Dunjudge Archive Batch 20
stringsofimpurity N/A Tags: Binary Search stringsofimpurity AtCoder Batch 20
partitiongame N/A Tags: Data Structures, Dynamic Programming Partition Game Codeforces 1527E Batch 20
toll N/A Tags: Data Structures, Dynamic Programming toll BOI 2017 Batch 20
1402 N/A Tags: Adhoc, Joke 1402 April Fools' 2021 (bensonlzl) Batch 20
selectingintervals N/A Tags: Binary Search, Dynamic Programming selectingintervals Codeforces 1055E Batch 20
malcolm N/A Tags: Line Sweep/Sliding Window malcolm COCI 2012/2013 Batch 20
sortbooks N/A Tags: Data Structures sortbooks IZhO 2019 Batch 19
special N/A Tags: Dynamic Programming special Dunjudge Archive Batch 19
feast N/A Tags: Dynamic Programming, Greedy feast NOI 2019 Batch 19
eexploration N/A Tags: Graph Theory Elementary Exploration Dec Course 2021 Elementary Final Contest (shenxy13) Batch 19
baseplans_ex N/A Tags: Data Structures baseplans_ex UWCOI 2020 (socho, astoria, kimbj0709) Batch 19
gerrymandering N/A Tags: Dynamic Programming Gerrymandering Dec Course 2021 BAPS (beepbeepsheep) Batch 19
parade N/A Tags: Dynamic Programming, Graph Theory, Trees parade Dunjudge Archive Batch 19
journey3 N/A Tags: Dynamic Programming Journey NOI 2018 Batch 19
potionseasy N/A Tags: Dynamic Programming, Greedy Potions (Easy Version) Codeforces Round 723 (errorgorn, oolimry) Batch 19
cudak N/A Tags: Binary Search, Dynamic Programming cudak COCI 2007/2008 Batch 19
puttingstrings N/A Tags: Constructive Algorithms, Graph Theory puttingstrings RI-HCI December Course Selection 2020 (rs) Batch 19
tourist N/A Tags: Data Structures, Greedy tourist IOI 2012 Practice Tasks Batch 19
fencing N/A Tags: Data Structures, Line Sweep/Sliding Window, Square Root Decomposition fencing RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 19
boxes_hkicpc N/A Tags: Graph Theory, Trees Boxes 2016 ACM ICPC Asia Hong Kong Regional Batch 19
fourbuckets N/A Tags: Adhoc, Math Four Buckets Educational Round 6 (oolimry) Batch 19
radioactive N/A Tags: Divide and Conquer, Dynamic Programming radioactive NOI 2015 Batch 19
swap N/A Tags: Graph Theory, Trees Swapping Cities APIO 2020 Interactive 19
pillars N/A Tags: Data Structures Pillars RI December Course Selection Test 2021 (rs) Batch 19
adjacentswaps N/A Tags: Brute Force, Greedy Adjacent Swaps Dunjudge Archive (shenxy13) Batch 19
infiniteloop N/A Tags: Graph Theory Infinite Looping Sequence 2017 RI Dec Course Sel (pwypeanut) Batch 19
packaging N/A Tags: Data Structures, Greedy, Math Packaging Codeforces 1690E Batch 19
combo N/A Tags: Adhoc Combo IOI 2018 Interactive 18
arrangetoys N/A Tags: Graph Theory, Math Arranging Toy Displays AGC 016D Batch 18
merchant_o N/A Tags: Dynamic Programming, Slope Trick Merchant Otter Dec Course 2020 BAPS Batch 18
horses N/A Tags: Data Structures, Math horses IOI 2015 Interactive 18
openingshop N/A Tags: Greedy Opening Shop Dec Course 2021 BAPS (Halogen) Batch 18
appletree N/A Tags: Graph Theory appletree Dunjudge Archive Batch 18
deletingnumbers N/A Tags: Constructive Algorithms, Greedy Deleting Numbers Grand Prix of Urals Batch 18
bookshelf N/A Tags: Data Structures bookshelf Dunjudge Archive Batch 18
cake N/A Tags: Brute Force, Data Structures cake CEOI 2014 Batch 18
indivisibility N/A Tags: Math indivisibility Dunjudge Archive Batch 18
plagia N/A Tags: Data Structures plagia December Course 2018 Advanced Final Contest Batch 18
artswap N/A Tags: Data Structures artswap HCI NOI Selection Retest 2020 (bensonlzl) Interactive 18
potionshard N/A Tags: Greedy Potions (Hard Version) Codeforces Round 723 (errorgorn, oolimry) Batch 17
berlandtaxi N/A Tags: Data Structures, Implementation Cancer Berland.Taxi NEERC 2017 Southern Subregional Contest Batch 17
sequence_apio N/A Tags: Dynamic Programming Split the sequence APIO 2014 Batch 17
snowcow N/A Tags: Data Structures, Graph Theory, Trees Snowcow USACO 2019 December Contest Platinum Batch 17
collectmushrooms4 N/A Tags: Data Structures, Dynamic Programming collectmushrooms4 Dunjudge Archive Batch 17
power N/A Tags: Dynamic Programming, Graph Theory, Trees power JOI Batch 17
prefixgcd N/A Tags: Adhoc, Brute Force, Math prefixgcd Dec Course 2021 BAPS (jiahng) Batch 17
race N/A Tags: Divide and Conquer, Trees Race IOI 2011 Interactive 17
interestring N/A Tags: Dynamic Programming, Math interestring RI-HCI December Course Selection 2020 (cstuart) Batch 17
password N/A Tags: Data Structures, Dynamic Programming, Greedy, Slope Trick password NOI 2021 Finals Batch 17
countingagain N/A Tags: Dynamic Programming, Math Counting Again ARC 104D Batch 17
rebuild N/A Tags: Constructive Algorithms, Graph Theory, Greedy rebuild RI-HCI-NUSH NOI Selection Test 2021 (shenxy13) Interactive 16
snakesnack N/A Tags: Dynamic Programming, Greedy snakesnack Codeforces 1239E Batch 16
iqtest2 N/A Tags: Math iqtest2 April Fools' 2022 (errorgorn) Batch 16
nian N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Nian 2020 CNY (oolimry) Batch 16
dna N/A Tags: Dynamic Programming DNA APIO 2008 Batch 16
jumper N/A Tags: Brute Force, Data Structures, Line Sweep/Sliding Window Manhattan Jumper HCI-NUSH NOI Selection 2022 (errorgorn) Batch 16
pancake N/A Tags: Brute Force, Graph Theory pancake NOI 2012 Batch 16
rmq N/A Tags: Data Structures, Greedy rmq NOI 2017 Batch 16
bananafever N/A Tags: Dynamic Programming, Graph Theory, Trees bananafever Dunjudge Archive Batch 16
divsum N/A Tags: Math Divisor Sum Educational Round 1 (errorgorn) Batch 16
battleship N/A Tags: Bitmask, Constructive Algorithms, Divide and Conquer Battleship HCI-NUSH NOI Selection 2022 (errorgorn) Interactive 16
doubleflip N/A Tags: Adhoc Double Flip TROC 24 (errorgorn) Batch 16
closedrooms N/A Tags: Adhoc, Graph Theory closedrooms AtCoder Regular Contest 014 Batch 16
beacon N/A Tags: Dynamic Programming, Math Beacon Towers Grand Prix of Seoul Batch 16
lppfnlcst N/A Tags: Binary Search, Data Structures Lazy Propagation Persistant Fat Nodes Li Chao Segment Tree Educational Round 1 (errorgorn) Batch 16
jumping2 N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Jumping Dunjudge Archive Batch 15
luckynumbers2 N/A Tags: Math luckynumbers2 Dec Course Final Contest 2017 Batch 15
installingapps N/A Tags: Dynamic Programming, Greedy Installing Apps NWERC 2017 Batch 15
funfair N/A Tags: Dynamic Programming, Graph Theory, Trees Funfair Educational Round 5 (rs) Batch 15
bombing N/A Tags: Graph Theory bombing Dunjudge Archive Batch 15
village N/A Tags: Graph Theory, Greedy, Trees village BOI 2020 Batch 15
rabbitpainting N/A Tags: Greedy rabbitpainting Dunjudge Archive (bensonlzl) Batch 15
fertile N/A Tags: Binary Search, Data Structures, Dynamic Programming fertile RI-HCI-NUSH NOI Selection Test 2021 (errorgorn) Batch 15
samelength N/A Tags: Joke Same Length Hello 2021 (errorgorn) Batch 15
findandprevent N/A Tags: Graph Theory, Trees Find and Prevent Tuymaada 2021 Batch 15
historical N/A Tags: Square Root Decomposition Historical JOI 2013/2014 Batch 15
mugger N/A Tags: Dynamic Programming mugger RI Problem Setter Contest 2019 (ngmh) Batch 15
bichrome N/A Tags: Graph Theory, Math, Trees bichrome Atcoder Batch 15
arcade N/A Tags: Adhoc, Data Structures, Dynamic Programming arcade NOI 2020 Finals Batch 15
chocolate N/A Tags: Dynamic Programming chocolate Dunjudge Archive Batch 15
triangles N/A Tags: Graph Theory, Square Root Decomposition Counting Triangles Classic Problem Batch 15
planning N/A Tags: Graph Theory, Greedy, Trees Company Planning TOKI Open 2014 Batch 15
mate N/A Tags: Graph Theory mate RSA Fun Contest (errorgorn) Batch 15
binomial N/A Tags: Math binomial Dunjudge Archive Batch 15
supperbox N/A Tags: Divide and Conquer, Dynamic Programming Estelle’s Supper Box RI-HCI NOI Selection Test 2018 Batch 15
excombo N/A Tags: Dynamic Programming, Greedy EX Combo RSA Fun Contest (oolimry) Batch 15
republiccity N/A Tags: Graph Theory Republic City RI Nov Sel 2020 (JustAWallaby) Batch 15
potatoqueue N/A Tags: Data Structures potatoqueue Dunjudge Archive Interactive 15
strawberry N/A Tags: Data Structures, Dynamic Programming Speedy Strawberries 2020 CNY (shenxy13) Batch 14
christmasturkeyfarm N/A Tags: Data Structures Christmas Turkey Farming Educational Round 2 (dillion) Batch 14
cave N/A Tags: Binary Search cave IOI 2013 Interactive 14
boring N/A Tags: Dynamic Programming boring Dunjudge Archive Batch 14
monochromecat N/A Tags: Graph Theory, Trees monochromecat ARC 097 Batch 14
tiles N/A Tags: Bitmask, Data Structures, Dynamic Programming tiles NOI 2021 Finals Batch 14
spy N/A Tags: Data Structures, Graph Theory, Trees spy 2013 IOI Japan National Team Selection Test Day 2 Batch 14
wabbitosu N/A Tags: Adhoc, Data Structures, Greedy Wabbit osu!taiko HCI December Course Selection 2021 (bensonlzl) Batch 14
minimetro N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window Minimetro HCI December Course Selection 2021 (huangqr) Batch 14
vouchers N/A Tags: Dynamic Programming vouchers Dunjudge Archive Batch 14
jumps N/A Tags: Data Structures, Greedy Rainforest Jumps APIO 2021 (bensonlzl) Interactive 14
truck N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Implementation Cancer, Math, Trees truck NOI 2021 Qualification Batch 14
globalwarming_ceoi N/A Tags: Data Structures, Dynamic Programming Global warming CEOI 2018 Batch 14
inequality2 N/A Tags: Adhoc, Constructive Algorithms inequality2 Dec Course 2021 BAPS (zaneyu) Batch 14
merchant N/A Tags: Binary Search, Dynamic Programming, Graph Theory Travelling Merchant APIO 2017 Batch 14
snail N/A Tags: Adhoc, Implementation Cancer, Syntax Snail NOI 2018 Prelims Batch 14
robobear N/A Tags: Graph Theory The Maze of RoboBear Tuymaada 2021 Batch 14
more_lca N/A Tags: Dynamic Programming, Graph Theory, Trees More LCA Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 14
seedflare N/A Tags: Information Theory Seed Flare SGP Sparring 2021 (lovemathboy) Interactive 14
catnames N/A Tags: Math catnames RI/RJC NOI Selection Test 2016 Batch 13
kickingshoes N/A Tags: Data Structures, Greedy, Math Kicking Shoes Educational Round 4 (maomao90) Batch 13
hdb N/A Tags: Data Structures, Dynamic Programming hdb Dunjudge Archive Batch 13
summarizing2021 N/A Tags: Explicitly Excluded (from IOI) 🗿🗿🗿 Hello 2022 (errorgorn) Interactive 13
mining N/A Tags: Graph Theory mining Dunjudge Archive Batch 13
delivery N/A Tags: Bitmask, Dynamic Programming, Graph Theory delivery Dunjudge Archive Batch 13
shortest N/A Tags: Explicitly Excluded (from IOI), Math shortest Dunjudge Archive Batch 13
lemonadestand N/A Tags: Greedy lemonadestand Dunjudge Archive Batch 13
rabbitbars N/A Tags: Binary Search, Data Structures, Divide and Conquer, Dynamic Programming rabbitbars Dunjudge Archive (bensonlzl) Batch 13
rabbitlineup N/A Tags: Divide and Conquer, Dynamic Programming rabbitlineup Dunjudge Archive Batch 13
duckwalk N/A Tags: Binary Search, Data Structures, Dynamic Programming duckwalk Codeforces 76F Batch 13
catteams N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming catteams RI/RJC NOI Selection Test 2016 Batch 13
colorgraph N/A Tags: Graph Theory colorgraph uwu (errorgorn) Batch 13
equals N/A Tags: Graph Theory equals ARC 097 Batch 13
surnames N/A Tags: Dynamic Programming, Graph Theory, Implementation Cancer, Square Root Decomposition, Trees Surnames 2020 CNY (errorgorn) Batch 13
exoticplants N/A Tags: Graph Theory Exotic Plants Luogu P4568 [JLOI2011] Batch 13
radiance N/A Tags: Square Root Decomposition radiance RSA Fun Contest (oolimry) Batch 12
lopov N/A Tags: Data Structures lopov COCI 2013/2014 Batch 12
island_boi N/A Tags: Graph Theory, Greedy, Trees island BOI 2022 Batch 12
events N/A Tags: Data Structures, Greedy events BOI 2022 Batch 12
paint_apio N/A Tags: Adhoc, Line Sweep/Sliding Window, Square Root Decomposition paint_apio APIO 2020 Interactive 12
baseplans N/A Tags: Adhoc Base Plans UWCOI 2020 (socho, astoria, kimbj0709) Batch 12
solarstorm N/A Tags: Graph Theory, Line Sweep/Sliding Window, Trees Solar Storm NOI 2020 Prelims Batch 12
outing N/A Tags: Data Structures Outing Educational Round 10 (Goodbye cstuart and kai824) (kai824) Batch 12
hellokitty N/A Tags: Binary Search, Data Structures, Math hellokitty Dunjudge Archive Batch 12
more_lca2 N/A Tags: Graph Theory, Trees More LCA 2 Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 12
visitingsingapore N/A Tags: Dynamic Programming, Implementation Cancer Visiting Singapore NOI 2020 Prelims Batch 12
cakerun N/A Tags: Data Structures Bowen's Cake Run December Course 2019 Advanced Final Contest (rs) Batch 12
midas N/A Tags: Graph Theory, Trees Midas POI 2017 Round 3 Day 1 Q1 Batch 12
divsum_dec18 N/A Tags: Math Divsum RI Deccourse 2018 Selection Test (eutroph) Batch 12
robots N/A Tags: Binary Search, Greedy robots IOI 2013 Interactive 12
shikandgame N/A Tags: Data Structures, Dynamic Programming, Line Sweep/Sliding Window shikandgame AGC 007 Batch 12
badknapsack N/A Tags: Brute Force, Dynamic Programming badknapsack Educational Round 3 (errorgorn) Batch 12
orangeroad N/A Tags: Data Structures, Line Sweep/Sliding Window orangeroad Educational Round 9 (jamessng, jamielim) Batch 12
countinghaybales N/A Tags: Dynamic Programming countinghaybales USACO 2022 Jan, Platinum Batch 12
cloudcomputing N/A Tags: Dynamic Programming Cloud computing CEOI 2018 Batch 12
woodcutter N/A Tags: Brute Force, Data Structures Woodcutter Codeforces 527C (modified) Interactive 12
duels N/A Tags: Adhoc, Data Structures duels Educational Round 9 (maomao90, jamessng) Batch 12
dreaming N/A Tags: Graph Theory dreaming IOI 2013 Interactive 12
selfpermutation N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming selfpermutation TOKI KSN Day 2 Batch 12
naan N/A Tags: Greedy, Math naan JOI 2018/2019 Spring Camp Batch 12
jams N/A Tags: Data Structures Jams Algorithm Class Mini-Contest 8 Batch 12
orangecollector N/A Tags: Bitmask, Data Structures, Dynamic Programming Orange Collector RI-HCI December Course Selection 2019 (rs) Batch 11
mergers N/A Tags: Adhoc, Data Structures, Graph Theory, Trees mergers JOI Batch 11
cashmoney N/A Tags: Math Cash Money 2020 CNY Batch 11
distribution N/A Tags: Bitmask, Constructive Algorithms, Meet in the Middle Distribution Codechef January Cook-Off 2021 Batch 11
skyscraper_apio15 N/A Tags: Graph Theory, Square Root Decomposition Jakarta Skyscrapers APIO 2015 Batch 11
segmenttree3 N/A Tags: Data Structures, Line Sweep/Sliding Window segmenttree3 Dec Course 2021 Intermediate Contest 4 (Data Structures III) (errorgorn, oolimry) Batch 11
hotspot N/A Tags: Graph Theory hotspot NOI 2017 Batch 11
departure N/A Tags: Data Structures, Greedy, Implementation Cancer departure NOI 2021 Qualification Batch 11
wall N/A Tags: Data Structures wall IOI 2014 Interactive 11
christmastree N/A Tags: Graph Theory, Trees Christmas Tree Educational Round 2 (errorgorn, oolimry) Batch 11
index N/A Tags: Binary Search, Data Structures index COCI 2020/2021 Contest 6 Batch 11
umbrella N/A Tags: Dynamic Programming umbrella USACO Silver Dec 2011 Batch 11
hacker N/A Tags: Data Structures, Greedy, Line Sweep/Sliding Window hacker BOI 2015 Batch 11
streetlamps N/A Tags: Data Structures, Divide and Conquer, Implementation Cancer Street Lamps APIO 2019 Batch 11
safety N/A Tags: Dynamic Programming, Slope Trick Safety NOI 2018 Batch 11
smokeflower N/A Tags: Data Structures, Divide and Conquer, Line Sweep/Sliding Window smokeflower Classic Problem Batch 11
ragingthunder N/A Tags: Data Structures, Implementation Cancer Raging Thunder Codeforces Batch 11
mamamintaplusa N/A Tags: Greedy mama MINta PLUSa Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 11
invasion N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Line Sweep/Sliding Window, Trees invasion Dunjudge Archive Batch 11
bracketflip N/A Tags: Data Structures, Line Sweep/Sliding Window, Math bracketflip Dec Course 2020 BAPS (pavement) Batch 11
candyshop N/A Tags: Data Structures candyshop Classic Problem Batch 11
pizzeria N/A Tags: Data Structures Pizzeria Queries CSES Batch 11
scrivener N/A Tags: Data Structures Crayfish scrivener IOI 2012 Interactive 10
strangedevice N/A Tags: Data Structures, Math Strange Device APIO 2019 Batch 10
werewolf N/A Tags: Data Structures, Graph Theory, Trees Werewolf IOI 2018 Interactive 10
bubblesort N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Bubble Sort Educational Round 4 (jamessng, zaneyu, oolimry) Batch 10
towers_noi N/A Tags: Constructive Algorithms, Data Structures, Greedy Towers NOI 2022 Finals Batch 10
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 10
acorns N/A Tags: Data Structures acorns MCO 2016 Batch 10
rating N/A Tags: Adhoc, Math Rating Changes Dec Trg 2019 (Elementary) Batch 10
mercurypoisoning N/A Tags: Graph Theory Mercury Poisoning UWCOI 2020 (socho, astoria, kimbj0709) Batch 10
routes N/A Tags: Adhoc, Graph Theory routes Dunjudge Archive Batch 10
cycling N/A Tags: Graph Theory, Trees cycling Dunjudge Archive Batch 10
flood N/A Tags: Graph Theory, Math Flood POI 2018 Round 1 Q3 Batch 10
rabbittolls N/A Tags: Graph Theory rabbittolls Dunjudge Archive Batch 10
dragonfly N/A Tags: Data Structures, Graph Theory, Trees dragonfly NOI 2022 Qualification (bensonlzl) Batch 10
selfdefence N/A Tags: Dynamic Programming Self Defence TOKI KSN Day 1 Batch 10
pandaski N/A Tags: Data Structures, Dynamic Programming, Implementation Cancer pandaski NOI 2016 Batch 10
straight N/A Tags: Bitmask, Dynamic Programming Pure Straight ARC 126 Batch 10
supertrees N/A Tags: Adhoc, Constructive Algorithms, Graph Theory Connecting Supertrees IOI 2020 Interactive 10
inequality N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming, Implementation Cancer, Line Sweep/Sliding Window inequality RI-HCI NOI Selection Test 2020 (0rang3) Batch 10
bridges_apio19 N/A Tags: Graph Theory, Square Root Decomposition Bridges APIO 2019 Batch 10
laughter N/A Tags: Binary Search, Data Structures, Implementation Cancer, Line Sweep/Sliding Window laughter Educational Codeforces Round 27 Batch 10
kthsubstring N/A Tags: Adhoc kthsubstring ARC 097 Batch 10
collaboration N/A Tags: Data Structures, Graph Theory, Trees Collaboration December Course 2019 Advanced Final Contest (0rang3) Interactive 10
hunter N/A Tags: Graph Theory, Trees Hunter Dunjudge Archive (bensonlzl) Interactive 10
catleap N/A Tags: Graph Theory catleap Dunjudge Archive Batch 10
colourblind N/A Tags: Graph Theory colourblind HCI NOI Selection Retest 2020 (bensonlzl) Interactive 10
threetowers N/A Tags: Brute Force, Greedy threetowers POI 2015 Round 2 Day 2 Q2 Batch 10
gwynethandtree N/A Tags: Explicitly Excluded (from IOI), Graph Theory, Trees Gwyneth and Tree Codeforces 199E (Div 2) Batch 10
sailor N/A Tags: Graph Theory sailor CPSPC 2010 Batch 10
tickets N/A Tags: Adhoc, Data Structures Carnival Tickets IOI 2020 Interactive 9
collectmushrooms5 N/A Tags: Greedy collectmushrooms5 Dunjudge Archive Batch 9
thanossort N/A Tags: Adhoc, Divide and Conquer thanossort RSA Fun Contest (errorgorn) Interactive 9
rabbitbridges N/A Tags: Binary Search, Graph Theory Rabbit Bridges Educational Round 5 (oolimry) Batch 9
wires N/A Tags: Adhoc Wires RI-HCI NOI Selection Test 2019 (bensonlzl) Interactive 9
magick N/A Tags: Adhoc, Information Theory, Math Magick RI-HCI NOI Selection Test 2019 Communication 9
roads N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Road Closures APIO 2021 Interactive 9
flowering N/A Tags: Data Structures flowering COCI 2008/2009 Batch 9
lambsrespite N/A Tags: Data Structures Lamb's Respite XXII Open Cup. Grand Prix of Korea Batch 9
sawmills N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming Two Sawmills CEOI 2004 Batch 9
catgameshow N/A Tags: Data Structures catgameshow RI/RJC NOI Selection Test 2016 Batch 9
rarwall N/A Tags: Data Structures rarwall Dunjudge Archive Interactive 9
istj N/A Tags: Data Structures, Trees ISTJ 2020 CNY, Classic Problem (0rang3, shenxy13) Batch 9
edgeflip N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Edge Flipping Educational Round 4 (jamessng) Batch 9
schedule N/A Tags: Dynamic Programming, Graph Theory schedule HCI NOI Selection Test 2014 Batch 9
thunderstorm N/A Tags: Data Structures, Greedy Thunderstorm Dec Trg 2019 (Elementary) Batch 9
mememagic N/A Tags: Dynamic Programming mememagic Dunjudge Archive Batch 9
bitaro N/A Tags: Dynamic Programming, Graph Theory, Square Root Decomposition Bitaro's Party JOI 2017/2018 Spring Camp Batch 9
burger N/A Tags: Greedy burger Code Jam to I/O 2018 for Women Batch 9
kmxorm N/A Tags: Bitmask, Math, Meet in the Middle kmxorm ASEAN Sparring 2022 (zscoder) Batch 9
ohbabyntriples N/A Tags: Binary Search, Data Structures, Greedy Oh Baby, n Triples! IOI 2020 Practice Session Batch 9
roots N/A Tags: Data Structures, Graph Theory, Trees roots Codeforces 695E Batch 9
island N/A Tags: Graph Theory, Math Island NOI 2018 Prelims Batch 9
stoningame N/A Tags: Math stoningame Valentine's Day Contest 2022 (maomao90) Batch 9
molecules N/A Tags: Adhoc, Line Sweep/Sliding Window Detecting Molecules IOI 2016 Interactive 9
uniquepath N/A Tags: Graph Theory uniquepath AGC38D Batch 9
wabot2 N/A Tags: Constructive Algorithms, Data Structures, Greedy wabot2 ASEAN Sparring 2022 (bensonlzl) Batch 9
makemst N/A Tags: Graph Theory, Math makemst Codeforces 1088F Batch 9
secret N/A Tags: Divide and Conquer, Information Theory Secret JOI Open 2014 Interactive 9
blanko N/A Tags: Data Structures, Greedy blanko Dunjudge Archive Batch 9
holdinghands N/A Tags: Graph Theory, Implementation Cancer, Trees holdinghands Dec Course 2020 BAPS (jiahng) Batch 9
jjooii2 N/A Tags: Adhoc jjooii2 JOI 2020 Final Round Batch 8
christmasfiboseq N/A Tags: Math Chirstmas Fibonacci Sequence Educational Round 2 (errorgorn) Batch 8
robot N/A Tags: Data Structures Robots Educational Round 8 (Goodbye oolimry) (oolimry) Batch 8
grapevine N/A Tags: Data Structures, Divide and Conquer, Explicitly Excluded (from IOI), Graph Theory, Trees Grapevine NOI 2022 Finals Batch 8
rockclimbing N/A Tags: Graph Theory rockclimbing NOI 2016 Batch 8
spiderweb N/A Tags: Dynamic Programming, Graph Theory spiderweb Dunjudge Archive Batch 8
weightedguess N/A Tags: Dynamic Programming Weighted Guess Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Interactive 8
mobitel N/A Tags: Dynamic Programming, Square Root Decomposition Mobitel COCI 2018/2019 Batch 8
funnytree N/A Tags: Graph Theory, Trees Funny Tree (Extreme Version) RuCode 2020 Div A (Extreme Version) (0rang3, rs) Batch 8
aesthetic N/A Tags: Data Structures, Graph Theory aesthetic NOI 2020 Finals Batch 8
sarenlist N/A Tags: Bitmask, Brute Force, Graph Theory, Trees sarenlist COCI 2021/2022 Batch 8
industriouslibrarian N/A Tags: Data Structures industriouslibrarian LOJ #2639 Batch 8
redistributinggifts N/A Tags: Bitmask, Dynamic Programming redistributinggifts USACO 2022 Feb Gold Batch 8
digitsum N/A Tags: Dynamic Programming digitsum UOJ Easy Round #4 Batch 8
bombing2 N/A Tags: Graph Theory bombing2 Dunjudge Archive Batch 8
snukethewizard N/A Tags: Adhoc, Binary Search snukethewizard AtCoder Batch 8
passes N/A Tags: Bitmask, Brute Force, Greedy, Math passes BOI 2022 Batch 8
pressstart N/A Tags: Data Structures, Graph Theory Press Start! HCI-RI 2020 May Contest (bensonlzl) Batch 8
aliens N/A Tags: Data Structures aliens Dunjudge Archive Batch 8
rabbitroad N/A Tags: Binary Search, Graph Theory, Greedy, Trees RabbitRoad RI-HCI December Course Selection 2019 (bensonlzl) Batch 8
kusac N/A Tags: Math, Syntax kusac COCI 2013/2014 Batch 8
archaeologist N/A Tags: Adhoc archaeologist NOI 2021 Finals Interactive 8
haiku N/A Tags: Dynamic Programming Iroha and Haiku AtCoder Batch 8
coingame N/A Tags: Adhoc, Explicitly Excluded (from IOI) coingame NTST 2015 Batch 8
frisbee N/A Tags: Data Structures, Dynamic Programming, Slope Trick Frisbee Training 2019 IOI Problem Setter Contest (0rang3) Batch 8
decayedbridges N/A Tags: Graph Theory decayedbridges Dunjudge Archive Batch 8
coolinteractive N/A Tags: Adhoc Cool Interactive Educational Round 8 (Goodbye oolimry) (errorgorn) Interactive 8
cp2booksales N/A Tags: Line Sweep/Sliding Window cp2booksales Dunjudge Archive Batch 8
hop N/A Tags: Math hop COCI 2020/2021 Contest #4 Problem 3 Batch 8
minerals N/A Tags: Information Theory minerals JOISC 2019 Interactive 8
catalansum N/A Tags: Explicitly Excluded (from IOI), Math catalansum (EE) Educational Round 3 (errorgorn, oolimry) Batch 8
airline N/A Tags: Graph Theory, Information Theory airline JOISC 2018, Day 3 Communication 8
sonya N/A Tags: Dynamic Programming, Slope Trick Sonya and Problem Wihtout A Legend Codeforces 713C Batch 8
prisoners N/A Tags: Adhoc, Graph Theory, Information Theory prisoners APIO 2014 Mock Contest Communication 7
vault N/A Tags: Dynamic Programming, Greedy vault BOI 2022 Batch 7
doubletrip N/A Tags: Brute Force, Constructive Algorithms, Graph Theory Double Trip Codeforces 1343E Batch 7
askonegetonefree N/A Tags: Dynamic Programming AskOneGetOneFree NOI 2015 Interactive 7
pekora N/A Tags: Greedy Pekora and Trampoline Educational Round 8 (Goodbye oolimry) (oolimry) Batch 7
trivialmaths N/A Tags: Explicitly Excluded (from IOI), Math trivialmaths Valentines Contest 2021 (errorgorn) Interactive 7
buildings N/A Tags: Data Structures, Line Sweep/Sliding Window Buildings Dunjudge Archive Batch 7
tokitsukazeandexplosion N/A Tags: Binary Search, Greedy tokitsukazeandexplosion Codeforces 1190E Batch 7
thanossort_st4 N/A Tags: Adhoc, Divide and Conquer, Explicitly Excluded (from IOI) thanossort_st4 RSA Fun Contest (errorgorn) Interactive 7
cakeslicing N/A Tags: Constructive Algorithms cakeslicing LOJ #6744 Batch 7
pastiri N/A Tags: Graph Theory, Greedy, Trees pastiri COI 2019/2020 Batch 7
mathtest N/A Tags: Implementation Cancer, Math, Syntax mathtest Dunjudge Archive Batch 7
doll N/A Tags: Adhoc, Constructive Algorithms Mechanical Doll IOI 2018 Interactive 7
books N/A Tags: Graph Theory, Greedy Ancient Books IOI 2017 Interactive 7
luckynumbers N/A Tags: Adhoc, Dynamic Programming Lucky Numbers Educational Round 8 (Goodbye oolimry) (oolimry) Batch 7
sardines N/A Tags: Data Structures, Dynamic Programming sardines RI NOI Selection Test 2014 Batch 7
biscuits N/A Tags: Dynamic Programming, Math Packing Biscuits IOI 2020 (Day 2) Interactive 7
trains_mco N/A Tags: Graph Theory, Greedy trains_mco MCO 2015 Batch 7
xortree N/A Tags: Data Structures xortree Classic Problem (errorgorn) Batch 7
toblerone N/A Tags: Brute Force, Dynamic Programming, Greedy toblerone HCI Mock NOI 2015 Batch 7
factories N/A Tags: Data Structures, Divide and Conquer, Explicitly Excluded (from IOI), Graph Theory, Trees factories JOI 2014 Open Interactive 7
cactus N/A Tags: Dynamic Programming, Graph Theory, Trees cactus LOJ #2250 Batch 7
ufo N/A Tags: Dynamic Programming ufo Dunjudge Archive Batch 7
grassplant N/A Tags: Data Structures, Explicitly Excluded (from IOI), Graph Theory, Trees Grass Planting Dunjudge Archive Batch 7
goodmorning N/A Tags: Graph Theory Good Morning ISC 2020 practice (errorgorn) Batch 7
judgeantibreaker N/A Tags: Binary Search, Square Root Decomposition judgeantibreaker Educational Round 6 (oolimry) Batch 7
wandering N/A Tags: Data Structures, Graph Theory, Trees wandering AGC 029 Batch 7
garden_ioi08 N/A Tags: Dynamic Programming Linear Garden IOI 2008 Batch 7
garden_ioi05 N/A Tags: Brute Force, Dynamic Programming Garden IOI 2005 Batch 7
inequality3 N/A Tags: Data Structures Social Inequality TOKI Open 2014 Batch 7
semafor N/A Tags: Explicitly Excluded (from IOI), Graph Theory, Math semafor COI 2020 Batch 7
escape N/A Tags: Bitmask, Brute Force, Graph Theory Escape UWCOI 2020 (socho, astoria, kimbj0709) Batch 6
aliens_ioi N/A Tags: Binary Search, Data Structures, Dynamic Programming Aliens IOI 2016 Interactive 6
qualitycontrol N/A Tags: Graph Theory, Trees Quality Control Educational Round 10 (Goodbye cstuart and kai824) (cstuart) Batch 6
harbingers N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees harbingers CEOI 2009 Batch 6
learningtrack N/A Tags: Divide and Conquer learningtrack LOJ #2773 Batch 6
compact N/A Tags: Data Structures, Dynamic Programming compact Dunjudge Archive Batch 6
cards N/A Tags: Data Structures cards Dunjudge Archive Batch 6
convention N/A Tags: Binary Search, Greedy convention USACO 2018 December Silver Batch 6
goodsubsegments N/A Tags: Data Structures goodsubsegments Codeforces Round #493 (Div. 1) Batch 6
sumo N/A Tags: Binary Search, Graph Theory sumo COCI 2013/2014 Batch 6
rabbitmeeting N/A Tags: Adhoc, Greedy RabbitMeeting December Course 2018 Advanced Final Contest Batch 6
fire N/A Tags: Data Structures fire JOI 2020 Final Round Batch 6
animaleditor N/A Tags: Data Structures animaleditor MCO Batch 6
firecracker N/A Tags: Data Structures, Greedy firecracker CNY Contest 2019 Batch 6
rabbitplane N/A Tags: Binary Search rabbitplane RI Problem Setter Contest 2019 (bensonlzl) Batch 6
multiplechoice N/A Tags: Constructive Algorithms multiplechoice USACO 2022 Jan, Platinum Batch 6
valley N/A Tags: Divide and Conquer, Graph Theory, Trees Alpine valley BOI 2019 Day 1 Batch 6
dominoes N/A Tags: Binary Search, Data Structures, Square Root Decomposition dominoes Educational Round 9 (maomao90, zaneyu) Batch 6
circleselection N/A Tags: Data Structures, Math Circle selection APIO 2018 Batch 6
alien9 N/A Tags: Adhoc, Dynamic Programming, Math alien9 IMO Shortlist 1996 Batch 6
atm N/A Tags: Graph Theory The Great ATM Robbery APIO 2009 Batch 6
cousin N/A Tags: Graph Theory, Trees cousin Dunjudge Archive Interactive 6
fireworks N/A Tags: Dynamic Programming, Graph Theory, Slope Trick, Trees Fireworks APIO 2016 Batch 6
badtree N/A Tags: Binary Search, Data Structures badtree RI-HCI December Course Selection 2019 (bensonlzl) Batch 6
workload2 N/A Tags: Square Root Decomposition Workload 2 Dec Course 2021 Intermediate Contest 4 (Data Structures III) (errorgorn) Batch 6
candies_ioi N/A Tags: Data Structures Distributing Candies IOI 2021 Interactive 6
strangedevice2 N/A Tags: Binary Search, Graph Theory, Information Theory, Trees strangedevice2 Codeforces 1158E Interactive 5
newhome N/A Tags: Divide and Conquer, Implementation Cancer, Slope Trick New Home APIO 2018 Batch 5
prefixsums2 N/A Tags: Math Prefix Sums 2 Educational Round 10 (Goodbye cstuart and kai824) (errorgorn) Batch 5
couples N/A Tags: Dynamic Programming couples December Course 2018 Advanced Final Contest Batch 5
pokemonmaster N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Implementation Cancer, Square Root Decomposition, Trees I want to be the very best too! NOI 2017 Batch 5
duathlon N/A Tags: Graph Theory, Trees Duathlon APIO 2018 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
lampposts N/A Tags: Binary Search lampposts Dunjudge Archive Interactive 5
housevisit N/A Tags: Dynamic Programming, Graph Theory, Trees housevisit CNY Contest 2019 (bensonlzl) Batch 5
messy N/A Tags: Binary Search Unscrambling a Messy Bug IOI 2016 Interactive 5
canbashsavetheday N/A Tags: Data Structures, Graph Theory, Trees canbashsavetheday Codeforces 757G Batch 5
tournament N/A Tags: Graph Theory, Trees tournament IOI 2012 Interactive 5
oenothera N/A Tags: Data Structures, Greedy, Square Root Decomposition oenothera Codeforces 1039E Batch 5
learningtrack2 N/A Tags: Data Structures, Dynamic Programming learningtrack2 LOJ #3068 Batch 5
garaza N/A Tags: Data Structures, Math garaza COCI Batch 5
leastround N/A Tags: Dynamic Programming leastround Codeforces 2B Batch 5
chunlian N/A Tags: Data Structures chunlian Dunjudge Archive Batch 5
souvenirs N/A Tags: Data Structures souvenirs Codeforces 765F Batch 5
intercastellar N/A Intercastellar JOI 2022 Final Round Batch 5
wiring N/A Tags: Adhoc, Greedy Fix Wiring Polish Collegiate Programming Contest 2021 Batch 5
niangao N/A Tags: Data Structures Nian Gao 2020 CNY (errorgorn) Batch 5
mice N/A Tags: Graph Theory mice Dunjudge Archive Batch 5
deda N/A Tags: Binary Search, Data Structures deda COCI 2017/2018 Batch 5
woodenraft N/A Tags: Greedy, Math woodenraft Codeforces 1223G Batch 5
mushroomfarm N/A Tags: Binary Search, Dynamic Programming Jianzhi’s Mushroom Farm RI NOI Selection Test 2017 Batch 5
sumzero N/A Tags: Adhoc, Binary Search, Dynamic Programming sumzero RMI 2020 Batch 5
stations N/A Tags: Graph Theory, Information Theory, Trees Stations IOI 2020 (Day 2) Communication 5
destroy N/A Tags: Dynamic Programming, Graph Theory, Trees Destroy RI-HCI NOI Selection Test 2019 Batch 5
latex N/A Tags: Data Structures, Dynamic Programming latex RI Deccourse 2018 Selection Test Batch 5
switches2 N/A Tags: Dynamic Programming, Math switches2 Educational Round 7 (errorgorn) Batch 5
fun N/A Tags: Adhoc, Graph Theory, Information Theory, Trees Fun Tour APIO 2020 Interactive 5
ponteng N/A Tags: Math, Square Root Decomposition Ponteng 2019 IOI Problem Setter Contest Batch 5
centroid N/A Tags: Brute Force, Graph Theory Centroid Dunjudge Archive 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
permutationswap N/A Tags: Adhoc permutationswap Valentine's Day Contest 2022 (maomao90) Batch 5
wavynumbers N/A Tags: Brute Force, Math, Meet in the Middle wavynumbers Codeforces 273E Batch 5
domine N/A Tags: Bitmask, Dynamic Programming domine COCI 2013/2014 Batch 5
christmaswall N/A Tags: Explicitly Excluded (from IOI), Math Christmas Wall (EE) Educational Round 2 (maomao90) Batch 5
sandwich N/A Tags: Divide and Conquer, Implementation Cancer Sandwich HCI-NUSH NOI Selection 2022 (errorgorn, oolimry, yanhao) Batch 5
blocks N/A Tags: Information Theory, Math Blocks UWCOI 2020 (socho, astoria, kimbj0709) Interactive 5
clockpalindrome N/A Tags: Adhoc, Dynamic Programming clockpalindrome December Course 2019 Advanced Final Contest Batch 5
servers N/A Tags: Graph Theory, Trees servers BOI 2021 Batch 5
portals N/A Tags: Data Structures, Graph Theory portals USACO 2021 US Open, Gold Batch 4
collectingstamps3 N/A Tags: Dynamic Programming collectingstamps3 JOI 2020 Final Round Batch 4
kronican N/A Tags: Bitmask, Dynamic Programming kronican COCI 2016/2017 Batch 4
flooding N/A Tags: Graph Theory flooding Dunjudge Archive Batch 4
cheaters N/A Tags: Explicitly Excluded (from IOI), Math cheaters Educational Round 3 (errorgorn) Batch 4
elephants N/A Tags: Binary Search, Square Root Decomposition Elephants IOI 2011 Interactive 4
changingcolours N/A Tags: Data Structures, Dynamic Programming changingcolours RI Problem Setter Contest 2019 (rs) Batch 4
birthday N/A Tags: Explicitly Excluded (from IOI), Math birthday RI Problem Setter Contest 2019 (syy) Batch 4
sale N/A Tags: Data Structures, Greedy sale Dunjudge Archive Batch 4
doodles N/A Tags: Graph Theory, Math doodles December Course 2019 Advanced Final Contest (rs) Batch 4
ktupleflip N/A Tags: Adhoc, Greedy K-tuple Flip TROC 24 (errorgorn) Batch 4
superpozicija N/A Tags: Constructive Algorithms, Greedy superpozicija COI 2022 Batch 4
climatechange N/A Tags: Binary Search, Data Structures, Dynamic Programming climatechange Dunjudge Archive Batch 4
chess N/A Tags: Adhoc, Bitmask, Data Structures chess NUSH ISC 2018 Batch 4
cowland N/A Tags: Data Structures, Explicitly Excluded (from IOI), Graph Theory, Trees Cow Land USACO 2019 February Contest, Gold Batch 4
persistentlists N/A Tags: Binary Search, Data Structures, Square Root Decomposition Persistent Lists Educational Round 6 (oolimry) Batch 4
suffixarray N/A Tags: Explicitly Excluded (from IOI), Math Oolimry and Suffix Array Codeforces Round 723 (zaneyu) Batch 4
bunchlocks N/A Tags: Graph Theory bunchlocks Dunjudge Archive Batch 4
wallisstop N/A Tags: Binary Search, Data Structures, Graph Theory Wall Is Stop Dunjudge Archive (bensonlzl) Batch 4
sculptures_apio15 N/A Tags: Bitmask, Dynamic Programming Bali Sculptures APIO 2015 Batch 4
tents N/A Tags: Dynamic Programming Tents JOI 2017/2018 Spring Camp Batch 4
sillysort N/A Tags: Math sillysort info(1) cup 2019 (modified) (errorgorn) Batch 4
dungeons2 N/A Tags: Binary Search, Data Structures dungeons2 AGM 2021, Final Round, Day 2 Batch 4
kucice N/A Tags: Line Sweep/Sliding Window kucice COCI 2021/2022 Batch 4
queuestack N/A Tags: Adhoc, Data Structures Queuestack Educational Round 10 (Goodbye cstuart and kai824) (lida, oolimry, cstuart) Batch 4
badnim2 N/A Tags: Explicitly Excluded (from IOI), Math Bad Nim 2 (EE) Educational Round 8 (Goodbye oolimry) (errorgorn) Batch 4
joke N/A Tags: Graph Theory Joke Dec Trg 2019 (Elementary) Batch 4
shopping N/A Tags: Dynamic Programming Shopping Dunjudge Archive Batch 4
3dhistogram N/A Tags: Data Structures, Divide and Conquer, Dynamic Programming 3D Histogram COCI 2020 Batch 4
fencing2 N/A Tags: Data Structures, Implementation Cancer fencing2 RI-HCI December Course Selection 2020 (errorgorn) Batch 4
workload_ex N/A Tags: Explicitly Excluded (from IOI), Math workload_ex Classic Problem in China (Probably) (errorgorn) Batch 4
ratar N/A Tags: Brute Force, Dynamic Programming ratar COCI 2013/2014 Batch 4
rarsum N/A Tags: Dynamic Programming rarsum Raffles Cat Helping Contest 2013 Batch 4
infiniteseq N/A Tags: Dynamic Programming infiniteseq AtCoder Regular Contest 071 Batch 4
gravity N/A Tags: Graph Theory gravity USACO 2013 US Open, SIlver 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
voting N/A Tags: Data Structures, Greedy Voting Dunjudge Archive Batch 4
streets N/A Tags: Data Structures, Graph Theory, Implementation Cancer, Trees One-Way Streets CEOI 2017 Batch 4
rainbow N/A Tags: Data Structures, Graph Theory, Math Land of the Rainbow Gold APIO 2017 Interactive 4
rainingseason N/A Tags: Data Structures, Graph Theory, Trees rainingseason Codeforces 1019E Batch 4
squarerect N/A Tags: Adhoc, Information Theory Square or Rectangle? NOI 2019 Prelims Interactive 4
infinitezoo N/A Tags: Bitmask, Graph Theory, Greedy, Math Zookeeper and The Infinite Zoo Codeforces Global Round 13 (errorgorn) Batch 4
usefft1 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 1 Classic Problem Batch 4
trivialmaths2 N/A Tags: Explicitly Excluded (from IOI), Math trivialmaths2 (EE) Educational Round 7 (errorgorn) Batch 4
manhattancompass N/A Tags: Binary Search, Graph Theory manhattancompass AtCoder Batch 4
hipercijevi N/A Tags: Graph Theory hipercijevi COCI 2012/2013 Batch 4
devil N/A Tags: Constructive Algorithms, Graph Theory The Devil's Algorithm Hello 2022 (errorgorn) Batch 4
productcounting N/A Tags: Divide and Conquer, Square Root Decomposition Product Counting Educational Round 5 (errorgorn) Batch 4
jedan N/A Tags: Dynamic Programming jedan COCI 2012/2013 Batch 4
orchard2 N/A Tags: Dynamic Programming orchard2 RI NOI Selection Test 2015 Batch 4
rainbowroad N/A Tags: Bitmask, Dynamic Programming, Graph Theory, Trees Rainbow Road HCI-RI 2020 May Contest (bensonlzl) Batch 4
fibotree N/A Tags: Data Structures, Explicitly Excluded (from IOI), Math fibotree Bubble Cup 14 (modified) Batch 4
efficientdelivery N/A Tags: Adhoc, Brute Force efficientdelivery UWCOI 2021 Batch 4
yabbitmeetup N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees yabbitmeetup HCI NOI Selection Retest 2020 (bensonlzl) Batch 4
gizmoguy N/A Tags: Slope Trick Gizmo Guy IOI 2020 Practice Session Batch 4
corporate N/A Tags: Data Structures, Divide and Conquer Corporate IOI 2020 Practice Session Batch 4
prison N/A Prisoner Challenge IOI 2022 (Day 1) Interactive 4
quality N/A Tags: Binary Search, Dynamic Programming Quality of Living IOI 2010 Interactive 4
zhylanio N/A Tags: Binary Search, Brute Force, Data Structures zhylanio IZHO 2022 Batch 4
gap N/A Tags: Information Theory, Math Gap APIO 2016 Interactive 4
citymapping N/A Tags: Information Theory, Trees CityMapping NOI 2018 Interactive 4
seqtransform N/A Tags: Brute Force, Data Structures, Greedy seqtransform LOJ #3704 Batch 4
alice N/A Tags: Graph Theory, Information Theory Alice IMO Shortlist 2019 Interactive 4
funnynim N/A Tags: Explicitly Excluded (from IOI), Math funnynim IMO Shortlist 2015 Batch 4
relutree N/A Tags: Data Structures relutree Classic Problem (errorgorn) Batch 4
keys N/A Tags: Graph Theory, Trees Keys IOI 2021 Interactive 4
globalwarming_ex N/A Tags: Data Structures, Graph Theory globalwarming_ex Dunjudge Archive Batch 4
fish N/A Catfish Farm IOI 2022 (Day 1) (oolimry) Interactive 4
osumnjiceni N/A Tags: Data Structures, Greedy, Trees Osumnjičeni COCI 2021/2022 Batch 3
chemistry N/A Tags: Dynamic Programming, Joke chemistry April Fools Contest 2020 (0rang3) Batch 3
killanton N/A Tags: Brute Force, Greedy Kill Anton Codeforces Round 723 (errorgorn) Batch 3
boxhaskey N/A Tags: Graph Theory Box Has Key HCI-RI 2020 May Contest (bensonlzl) 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
youngmaids N/A Tags: Data Structures youngmaids Dunjudge Archive Batch 3
4cuts N/A Tags: Adhoc, Brute Force 4cuts Dunjudge Archive Batch 3
delegation N/A Tags: Dynamic Programming, Graph Theory, Trees Delegation USACO 2020 Feb, Gold Batch 3
greatmerge N/A Tags: Data Structures, Graph Theory, Trees greatmerge LOJ #2230 Batch 3
supermarkets N/A Tags: Data Structures, Implementation Cancer Supermarkets IOI 2020 Practice Session Batch 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
marathon_usaco N/A Tags: Data Structures Marathon USACO 2014 Dec, Gold Batch 3
bridge_cerc N/A Tags: Graph Theory, Square Root Decomposition Bridge CERC 2018 Batch 3
selfstudy N/A Self Study JOI 2022 Final Round Batch 3
multiple N/A Tags: Graph Theory, Math multiple Dunjudge Archive Batch 3
travelling N/A Tags: Math travelling ASEAN Sparring 2022 (kevinsogo) Batch 3
seats N/A Tags: Data Structures Seats IOI 2018 Interactive 3
dinnerbox N/A Tags: Dynamic Programming, Greedy Jianzhi’s Dinner Box RI NOI Selection Test 2017 Batch 3
tickets_loj N/A Tags: Divide and Conquer, Dynamic Programming, Trees tickets_loj LOJ #2249 Batch 3
islands N/A Thousands Islands IOI 2022 (Day 2) Interactive 3
bore N/A Tags: Brute Force Boring Dunjudge Archive Batch 3
plants N/A Tags: Binary Search, Data Structures Comparing Plants IOI 2020 Interactive 3
penghulu N/A Tags: Dynamic Programming, Graph Theory, Trees Penghulu MCO 2016 Batch 3
bananadance N/A Tags: Math bananadance Dunjudge Archive Batch 3
treepainting N/A Tags: Data Structures, Graph Theory, Trees treepainting LOJ #2001 Batch 3
switches N/A Tags: Explicitly Excluded (from IOI), Math switches Educational Round 7 (myrcella, errorgorn) Batch 3
fabric N/A Tags: Data Structures, Dynamic Programming fabric NOI 2016 Batch 3
linearbasis N/A Tags: Explicitly Excluded (from IOI), Math linearbasis Hello 2022 (errorgorn) Batch 3
cardgame N/A Tags: Data Structures, Dynamic Programming cardgame Dunjudge Archive Batch 3
switches998244353 N/A Tags: Explicitly Excluded (from IOI), Math switches998244353 (EE) Educational Round 7 (errorgorn) Batch 3
addsubtract N/A Tags: Dynamic Programming, Greedy addsubtract Dunjudge Archive Batch 3
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 3
pawns N/A Tags: Adhoc, Explicitly Excluded (from IOI), Math e4e5 Ke2? TROC 24 (maomao90, errorgorn) Batch 3
election_joi22 N/A Let's Win the Election JOI 2022 Final Round Batch 3
ballsofbuma N/A Tags: Adhoc Balls of Buma Dunjudge Archive Batch 3
orlando N/A Tags: Bitmask, Data Structures, Dynamic Programming, Explicitly Excluded (from IOI), Graph Theory, Implementation Cancer, Trees orlando RI Problem Setter Contest 2019 (zhuan, 0rang3) Batch 3
izbori N/A Tags: Adhoc, Data Structures, Math izbori COCI 2021/2022 Batch 3
knapsack2 N/A Tags: Dynamic Programming knapsack2 David Pisinger (1995) Batch 3
hyperoperations N/A Tags: Math hyperoperations Dunjudge Archive Batch 3
robot2 N/A Tags: Adhoc, Binary Search, Line Sweep/Sliding Window robot2 Dunjudge Archive Batch 3
urbanplanning N/A Tags: Graph Theory, Implementation Cancer, Trees urbanplanning IZhO 2022 Batch 3
sjeckanje N/A Tags: Data Structures, Greedy sjeckanje COCI 2020/2021 Batch 3
sudoku N/A Tags: Constructive Algorithms, Greedy sudoku NOI 2015 Batch 3
dateornot N/A Tags: Binary Search, Information Theory Date Or Not? Dunjudge Archive Interactive 3
fencing3 N/A Tags: Data Structures, Square Root Decomposition fencing3 Educational Round 3 (errorgorn, tqbfjotld) Batch 3
notebook N/A Tags: Graph Theory notebook Dunjudge Archive Batch 3
mirrortree N/A Tags: Graph Theory, Trees mirrortree BOI 2011, Day 2 Batch 3
newlottery N/A Tags: Dynamic Programming New Lottery Google Code Jam 2014 Batch 3
boomerangs N/A Tags: Adhoc Bouncing Boomerangs Codeforces Raif Round 1 (bensonlzl) Batch 3
toy N/A Tags: Graph Theory, Trees toy ROI 2014 Batch 3
wiring_ioi N/A Tags: Dynamic Programming Wiring IOI 2017 Interactive 3
constellation2 N/A Tags: Line Sweep/Sliding Window constellation2 JOISC 2014 Batch 3
bodyguard N/A Tags: Dynamic Programming bodyguard JOISC 2021 Batch 3
colour N/A Tags: Data Structures colour Dunjudge Archive Batch 3
shoes N/A Tags: Data Structures, Greedy Arranging Shoes IOI 2019 (Day 1) Interactive 3
pandasoldiers N/A Tags: Adhoc, Data Structures Soldiers Dunjudge Archive Batch 3
epicinteractive N/A Tags: Adhoc, Information Theory, Math Epic Interactive Educational Round 8 (Goodbye oolimry) (errorgorn, oolimry) Interactive 3
circuit N/A Digital Circuit IOI 2022 (Day 2) Interactive 3
game N/A Tags: Graph Theory Game APIO 2022 Interactive 3
bananaland N/A Tags: Dynamic Programming bananaland NUSH ISC 2018 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
closedpath N/A Tags: Graph Theory, Trees closedpath Dunjudge Archive Batch 3
flyingsquirrel N/A Tags: Data Structures, Dynamic Programming, Greedy, Slope Trick Flying Squirrel Korean IOI Selection Day 1 Batch 3
foolpruf N/A Tags: Data Structures, Graph Theory, Greedy Foolprüf Security NERC 2019 Batch 3
unitedcows N/A Tags: Data Structures, Line Sweep/Sliding Window United Cows USACO 2021 Open, Gold Batch 3
timeleap N/A Tags: Data Structures timeleap JOI Batch 3
marathon N/A Tags: Dynamic Programming, Graph Theory marathon RI Problem Setter Contest 2019 (Ziwyy) Batch 3
perishableroads N/A Tags: Graph Theory perishableroads Codeforces 773D Batch 3
trekking N/A Tags: Bitmask, Dynamic Programming, Graph Theory Jungle Trekking HCI NOI Selection Test 2017 Batch 3
meetings N/A Tags: Data Structures, Divide and Conquer Meetings IOI 2018 Interactive 3
escalation N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees escalation RI-HCI December Course Selection 2019 (bensonlzl) Batch 3
cantor N/A Tags: Binary Search, Information Theory cantor TROC 24 (errorgorn) Interactive 3
graphoverflow N/A Tags: Graph Theory, Math graphoverflow RI Deccourse 2018 Selection Test (jerryhanjt) Batch 3
graph N/A Tags: Graph Theory, Greedy, Trees graph Dunjudge Archive Batch 3
vision N/A Tags: Adhoc, Constructive Algorithms, Information Theory Vision Program IOI 2019 Interactive 3
dahliahostels N/A Tags: Dynamic Programming, Math dahliahostels Valentines Contest 2021 (errorgorn) Batch 3
insects N/A Rarest Insects IOI 2022 (Day 2) Interactive 3
bracketcount N/A Tags: Dynamic Programming, Explicitly Excluded (from IOI), Implementation Cancer bracketcount Valentines Contest 2021 (errorgorn) Batch 3
nom N/A Tags: Dynamic Programming, Math nom RMI 2021 Batch 3
friend N/A Tags: Adhoc friend IOI 2014 Interactive 3
mergecards N/A Tags: Adhoc, Dynamic Programming Merge Cards Google Kick Start 2020 Round G 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
ples N/A Tags: Greedy ples COCI 2011/2012 Batch 3
elca N/A Tags: Data Structures, Graph Theory, Trees elca Codeforces 482E Batch 2
cupboardjumps N/A Tags: Dynamic Programming, Slope Trick cupboardjumps Codeforces 1500F Batch 2
rabbitradar N/A Tags: Data Structures, Dynamic Programming rabbitradar Dunjudge Archive (bensonlzl) Batch 2
rect N/A Tags: Brute Force, Data Structures Rectangle IOI 2019 (Day 1) Interactive 2
filibuster N/A Tags: Data Structures Filibuster IOI 2020 Practice Session Batch 2
edgeremove N/A Tags: Dynamic Programming, Graph Theory, Implementation Cancer, Trees edgeremove LOJ #3705 Batch 2
dungeons N/A Tags: Graph Theory Dungeons Game IOI 2021 Interactive 2
dzumbus N/A Tags: Dynamic Programming, Graph Theory, Trees Džumbus COCI 2019/2020 Batch 2
cross N/A Tags: Dynamic Programming Cross Dunjudge Archive Batch 2
powersupply N/A Tags: Adhoc, Data Structures, Line Sweep/Sliding Window, Math Power Supply Educational Round 5 (cstuart) Batch 2
neila N/A Tags: Adhoc, Math neila RMM 2013/5 Batch 2
harvest N/A Tags: Data Structures, Implementation Cancer Harvest JOI 2019/2020 Batch 2
registers N/A Tags: Bitmask, Constructive Algorithms Bit Shift Registers IOI 2021 Interactive 2
trianglesum N/A Tags: Brute Force, Dynamic Programming trianglesum NOI 2010 Selection Test Batch 2
spiderclimb N/A Tags: Dynamic Programming, Implementation Cancer, Trees spiderclimb LOJ #3661 Batch 2
wombats N/A Tags: Data Structures wombats IOI 2013 Interactive 2
fever N/A Tags: Graph Theory, Greedy fever JOISC 2021 Batch 2
railwaytrip2 N/A Railway Trip 2 JOI 2022 Final Round Batch 2
streetlamps_ex N/A Tags: Data Structures, Divide and Conquer, Implementation Cancer 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
grazing N/A Tags: Bitmask, Brute Force, Graph Theory grazing USACO Bronze Jan 2012 Batch 2
superfanclub N/A Tags: Graph Theory, Trees Estelle’s Super Fan Club RI-HCI NOI Selection Test 2018 Interactive 2
election_joi N/A Tags: Data Structures, Dynamic Programming, Graph Theory, Trees Election Campaign JOI Open 2015 Batch 2
synergies N/A Tags: Constructive Algorithms, Graph Theory Synergies IOI 2020 Practice Session Batch 2
rainbowfish N/A Tags: Dynamic Programming, Graph Theory, Trees Rainbow Fish Mock APIO 2015 Batch 2
usefft4 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 4 Valentine's Day Contest 2022 (errorgorn) Batch 2
styles N/A Tags: Binary Search, Data Structures, Dynamic Programming Styles IOI 2020 Practice Session Batch 2
taxes N/A Tags: Data Structures, Dynamic Programming, Square Root Decomposition taxes December Course 2018 Advanced Final Contest Batch 2
mars N/A Tags: Graph Theory, Information Theory Mars APIO 2022 Interactive 2
diesel N/A Tags: Dynamic Programming, Graph Theory diesel NOI 2013 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
stagegames_part1 N/A Tags: Adhoc, Information Theory Estelle’s Stage Games (Subtasks 1 - 5) RI-HCI NOI Selection Test 2018 Interactive 2
paleta N/A Tags: Dynamic Programming, Graph Theory, Math paleta COCI 2013/2014 Batch 2
boxoffice N/A Tags: Brute Force, Data Structures, Implementation Cancer Box Office Dunjudge Archive Batch 2
preciseforecast N/A Tags: Graph Theory preciseforecast LOJ #3101 Batch 2
coolslogans N/A Tags: Data Structures coolslogans LOJ #6288 Batch 2
banks N/A Tags: Graph Theory Banks IOI 2020 Practice Session Batch 2
presents N/A Tags: Explicitly Excluded (from IOI), Math presents (EE) Valentines Contest 2021 (maomao90) Batch 2
UCFJ N/A Tags: Data Structures UCFJ USACO 2021 US Open, Platinum Batch 2
killanton_ex N/A Tags: Bitmask, Dynamic Programming killanton_ex Valentine's Day Contest 2022 (errorgorn) Batch 2
tomskitchen N/A Tags: Dynamic Programming Tom’s Kitchen BOI 2019 Day 2 Batch 2
sandcastle2 N/A Sandcastle 2 JOI 2022 Final Round Batch 2
math N/A Tags: Brute Force, Math Primes Up April Fools Contest 2020 (shenxy13) Batch 2
boat N/A Tags: Dynamic Programming, Math Boat APIO 2016 Batch 2
figures N/A Tags: Binary Search, Dynamic Programming Figures IOI 2020 Practice Session Batch 2
rabbitgifts N/A Tags: Data Structures, Math rabbitgifts December Course 2018 Advanced Final Contest Batch 2
springtrap N/A Tags: Data Structures springtrap Educational Round 1 (bensonlzl) Batch 2
mincross_usaco N/A Tags: Data Structures mincross_usaco USACO 2017 Feb, Platinum Batch 2
koala N/A Tags: Binary Search, Constructive Algorithms, Divide and Conquer, Information Theory Koala Game APIO 2017 Interactive 2
cardgame2 N/A Tags: Dynamic Programming cardgame2 Dunjudge Archive Batch 2
papplesort N/A Tags: Data Structures papplesort Dunjudge Archive Batch 2
split N/A Tags: Constructive Algorithms, Graph Theory, Trees Split the Attractions IOI 2019 (Day 1) Interactive 2
snakecode N/A Tags: Dynamic Programming snakecode Dunjudge Archive Interactive 2
ruler N/A Tags: Brute Force, Data Structures, Implementation Cancer Ruler Of The Zoo Educational Round 8 (Goodbye oolimry) (oolimry) Batch 2
trackingtraining N/A Tags: Graph Theory, Math Tracking Training IOI 2020 Practice Session Batch 2
sequence N/A Tags: Adhoc, Greedy sequence AtCoder Batch 2
seabreakpath N/A Tags: Data Structures Seabreak Path SGP Sparring 2021 (lovemathboy) Batch 2
girlfriends N/A Tags: Explicitly Excluded (from IOI), Math girlfriends (EE) CP Singles Day Contest 2020 (errorgorn) Batch 2
secret_mco N/A Tags: Adhoc Secret MCO 2015 Batch 2
cakeatstake N/A Tags: Data Structures, Implementation Cancer Cake at Stake IOI 2020 Practice Session Batch 2
alphabrackets N/A Tags: Data Structures, Dynamic Programming alphabrackets Dec Course Final Contest 2017 Batch 2
phonenumbers N/A Tags: Dynamic Programming phonenumbers USACO 2022 Feb, Platinum Batch 2
triumvirate N/A Tags: Dynamic Programming Triumvirate IOI 2020 Practice Session Batch 2
ispit N/A Tags: Adhoc ispit COCI 2018/2019 Batch 2
weddingcity N/A Tags: Constructive Algorithms, Graph Theory weddingcity IOI Sparring 2018 SGP Batch 2
fiboregisters N/A Tags: Adhoc, Constructive Algorithms, Math IOI Registers: but epic TROC 24 (errorgorn) Batch 2
boarding N/A Tags: Graph Theory boarding NUSH ISC 2018 Batch 2
notimetodry N/A Tags: Data Structures, Square Root Decomposition No Time to Dry USACO 2021 February Contest, Platinum Batch 2
repairs N/A Tags: Data Structures, Explicitly Excluded (from IOI), Graph Theory, Trees repairs Dunjudge Archive Batch 2
ninjaseasy N/A Tags: Data Structures Ninjas (Easy) TROC 24 (oolimry) Batch 2
joker N/A Tags: Adhoc, Divide and Conquer, Graph Theory joker BOI 2020 Batch 2
forensic N/A Tags: Brute Force, Graph Theory forensic NOI 2012 Batch 2
paint_coi N/A Tags: Graph Theory, Square Root Decomposition paint_coi COI 2020 Batch 2
wearenumberone N/A Tags: Graph Theory We Are Number One IOI 2020 Practice Session Batch 2
escapesadland N/A Tags: Binary Search, Graph Theory Escape Sadland Dunjudge Archive 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
clipboard N/A Tags: Adhoc, Data Structures Jianzhi’s Clipboard Sorting RI NOI Selection Test 2017 Batch 2
towers_ioi N/A Radio Towers IOI 2022 (Day 1) Interactive 2
lottery N/A Tags: Adhoc Lottery CEOI 2018 Batch 2
construction N/A Tags: Graph Theory, Trees Construction of Highway JOI 2017/2018 Spring Camp Batch 2
mrbeancurd N/A Tags: Dynamic Programming mrbeancurd HCI Be A Problem Setter (BAPS) Contest 2017 Batch 2
subwaytrip N/A Tags: Graph Theory subwaytrip Dunjudge Archive Batch 2
visiting N/A Tags: Graph Theory, Trees visiting Dunjudge Archive Batch 2
nutritionist N/A Tags: Data Structures nutritionist Dunjudge Archive Batch 2
shuffle N/A Tags: Constructive Algorithms, Graph Theory, Implementation Cancer shuffle NOI 2019 Interactive 2
goneviral N/A Tags: Binary Search, Graph Theory Gone Viral IOI 2020 Practice Session Batch 2
cantor_ex N/A Tags: Binary Search, Information Theory cantor_ex Valentine's Day Contest 2022 (errorgorn) Interactive 2
camels N/A Tags: Data Structures Guessing Camels NWERC 2015 Batch 2
morepaths N/A Tags: Dynamic Programming morepaths Dunjudge Archive Batch 2
powerpoints N/A Tags: Constructive Algorithms, Implementation Cancer Power Points IOI 2020 Practice Session Batch 2
firing N/A Tags: Data Structures, Implementation Cancer Firing IOI 2020 Practice Session Batch 2
shopping_joi N/A Tags: Binary Search, Data Structures, Divide and Conquer shopping_joi JOISC 2021 Communication 1
rarkids N/A Tags: Constructive Algorithms, Math rarkids IOI Sparring 2018 SGP Interactive 1
sequence_loj N/A Tags: Graph Theory, Greedy sequence_loj LOJ #3158 Batch 1
hexagon N/A Tags: Graph Theory, Implementation Cancer, Math Hexagonal Territory APIO 2021 Interactive 1
builderswand N/A Tags: Dynamic Programming Builder’s Wand HCI NOI Selection Test 2017 Batch 1
cursordistance N/A Tags: Binary Search, Math cursordistance Codeforces 1246F Batch 1
trianglecraft N/A Tags: Math Trianglecraft HCI NOI Selection Test 2017 Batch 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
lost N/A Tags: Bitmask, Information Theory Jianzhi’s Lost RI NOI Selection Test 2017 Interactive 1
usefft2 N/A Tags: Math Use FFT 2 Valentine's Day Contest 2022 (errorgorn) 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, Implementation Cancer Mooshroom Farm HCI NOI Selection Test 2017 Batch 1
redstonelamps N/A Tags: Explicitly Excluded (from IOI), Implementation Cancer, Math Redstone Lamps HCI NOI Selection Test 2017 Batch 1
consistency N/A Tags: Data Structures, Implementation Cancer Consistency RI-HCI NOI Selection Test 2019 (bensonlzl) Batch 1
virus N/A Tags: Adhoc, Graph Theory, Line Sweep/Sliding Window virus JOISC 2017, Day 1 Batch 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
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
spiraldance N/A Tags: Adhoc, Math Estelle’s Spiral Dance RI-HCI NOI Selection Test 2018 Batch 1
pond N/A Tags: Data Structures, Dynamic Programming, Implementation Cancer pond NOI 2021 Finals Batch 1
watchmen N/A Tags: Graph Theory watchmen BOI 2021 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
rookable N/A Tags: Graph Theory Rookable NUSH NOI Selection Test 2018 Batch 1
friendcross N/A Tags: Data Structures friendcross USACO 2017 Feb Plat Batch 1
cellulardata N/A Tags: Bitmask, Dynamic Programming, Explicitly Excluded (from IOI), Implementation Cancer, Math Cellular Data IOI 2020 Practice Session Batch 1
reflection N/A Tags: Constructive Algorithms, Implementation Cancer, 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
network2 N/A Tags: Data Structures, Explicitly Excluded (from IOI), Graph Theory, Trees network Dunjudge Archive Batch 1
minedges N/A Tags: Graph Theory Minimizing Edges USACO 2021 February Contest, Platinum Batch 1
trespasser N/A Tags: Bitmask, Implementation Cancer, Information Theory ADVANCED Trespasser 2019 IOI Problem Setter Contest (bensonlzl) Interactive 1
fruits_noi N/A Tags: Data Structures, Dynamic Programming Fruits NOI 2022 Finals (bensonlzl) Batch 1
wakeup N/A Tags: Binary Search, Data Structures Wake Up IOI 2020 Practice Session Batch 1
usefft3 N/A Tags: Explicitly Excluded (from IOI), Math Use FFT 3 Valentine's Day Contest 2022 (errorgorn) Batch 1
arrangement N/A Tags: Data Structures, Dynamic Programming, Greedy arrangement LOJ #3327 Batch 1
idigit N/A Tags: Bitmask, Math I Dig It! IOI 2020 Practice Session Batch 1
mountain N/A Tags: Data Structures Mountain IOI 2005 Batch 1
binaryseq N/A Tags: Math BinarySeq Dunjudge Archive (bensonlzl) Batch 1
spotlights N/A Tags: Adhoc Estelle’s Concert Spotlights RI-HCI NOI Selection Test 2018 Batch 1
crab N/A Tags: Bitmask, Dynamic Programming, Implementation Cancer Crab NUSH NOI Selection Test 2018 Batch 1
maxmex N/A Tags: Data Structures, Graph Theory, Trees Max Mex Dunjudge Archive Batch 1
wheelofmisfortune N/A Tags: Implementation Cancer Wheel of Misfortune IOI 2020 Practice Session Batch 1
obelisk N/A Tags: Graph Theory obelisk NOI 2014 Batch 1
minimax N/A Tags: Graph Theory, Trees minimax Hello 2020 (errorgorn) Batch 1
inversionsum N/A Tags: Dynamic Programming, Math inversionsum Dunjudge Archive Batch 1
cats N/A Tags: Adhoc cats NOI 2014 Batch 1
gate N/A Tags: Data Structures, Graph Theory, Trees gate LOJ #2474 Batch 0
twoavenues N/A Tags: Data Structures, Graph Theory, Trees twoavenues Codeforces 1648F Batch 0