YSH2020's profile

Name Yong Siu Hei
School nush
Role admin
Country Singapore
View Submissions
Solved Problems
01knapsack 0405 1111galpassword 1402
1503 1609 1821 3nplus1
3nplus1II 4russians 4sum 727
7up GSS NYCanteen NYSSW_easy
NYSport OrXor SameMapInTheRpgWorld Unbalanced
abbb abc_apio23 abcs add1_easy
addictiontoworry addition addition2 addition3
adjacentswaps adjlist adjmatrix alienalien
amicablecats ancestor aoi_fft aoi_game
aoi_umbrella applebaskets applefarm aratherinterestingtube
arcwrecker2 area area_noi armpit
arrayfind arraygraph arrayproblem assembly
assistance atleasttripledate atomsplit badnim
badpotato badtone33 ballot bananafarm
bananasmoothie basement basketball basketball_cpic
beareatrabbit belittle bestplace bftrouble
bigredarrow binarycoins binarylock binaryroads
binarysearch binaryspells bingo blackmagic
blanko boardvision bobek bombardirocrocodilo
bookshelf bosses boundlessboxes boxes4
boxes_hkicpc boxispull bracketex bracketstack
bracketsyndrome breakfast brick bronzemedal
buffet burgers buycomputer buygifts
buyingcandy calc candies candies3
candles candymountain_ex candyshop cappuccinoassassino
car card cards cardtrick
carpark carrots casino catalansum
catfight catlunch catsort ccs
celldivision charges chessislands chickensoup
childsetter2 childsetter4 childsetter5 childvschild
chinese choochoo chope christmasfeast
cht clearingleaves clique clocktower
closedpath closingshop cny coinbag
coincombinations coingame coinjourney coins
coke cokelesssugar cokemoresugar collectmushrooms
collectmushrooms2 collectmushrooms6 combo commando
commonsubseq commonsubstring competition compleecode
conductslip conlang container contestcalc
conversations conversations_easy convexhull cookieclickeralpha
countalp createnumber crypto cuberoot
cups cupstacking dayum deathray
decayedbridges deciphering_zane_4 deciphering_zane_ex deda
deforestation deliveroo democracy deque
descsort devour diamond dice
differencearray digits dijkstra dinowalk
discord div3 divideby2 divisibility
division dna_ioi do_you_like_me dogmonkey
doll_noi doubleflip downbad dquery
drama drones duckbuttons duckeatant
duckeatduck duckhunt duckhunt11 duckhunt12
duckhunt13 duckhunt14 duckhunt15 duckhunt16
duckhunt17 duckhunt18 duckhunt19 duckhunt2
duckhunt20 duckhunt21 duckhunt22 duckhunt23
duckhunt24 duckhunt25 duckhunt27 duckhunt28
duckhunt29 duckhunt3 duckhunt30 duckhunt31
duckhunt32 duckhunt33 duckhunt36 duckhunt37
duckhunt38 duckhunt4 duckhunt5 duckhunt6
duckhunt67 duckhunt7 duckhunt8 ducktransport
duckwander dyingpolynomial dynamicdag eating
eatinghealthy eatingkids eatingparallelograms eeducation
eelimination eeniemeenie eescapism eevacuation
eexploration eight el_classico employee
entropy entropy2 equals erp
eta evans_peculiar_hobby evenorodd evenorodd_ex
everyonewinstherace exam examstress exhibition
experimentexplodeexpel explosion exponentiate exponentiate_easy
exponentiate_ex f7 factorial factorial_easy
factorymachines feedtheduck fenwicktree fenwicktree_easy
fibo fibo_easy finalday findinggrass_ex
findingpavement findmultiple fireandbeary firstabc
fitnesscorner fizzbuzz flamethrower flappyrabbit
flip flipcards floors flows
flybot foodchain foreveralone fractions
fraud frog3 frogs fuel
fuji funnyballs funnynim funnysequence
gcd gecko general generosity
gentlepairs gfriendmania giantduck gift
givinggifts globalwarming glottalstops goodbye
goodgame goodprogrammer goodseq goofyarray
goofyrooks goombatower gota gotoschool
gotoschool_ex grassplant greenbeans greeting
grid guanine guardingtreasure guards
guards_ex guessproblem guessqueue gwynethandtree
gymbadges hacked hacking hallucinations
hammeringnails hamster1 harddisk hashcollision
heatwv hedgehogcrimes_easy hello helloworld
helloworld2 history hld hld_easy
hld_easy_2 homeworkextension hoofpaperscissor hop
housing hungrycats hungryrabbits1 identifyinggirlfriends
idetestevennumbers ihate1111 ihatenonint illuminate
impossiblegame index indextimesa inheritance
installingapps installingapps_ex integralmania intercastellar
inversioncounting inversions ippt iqtest
iqtest2 iqtest3 iroha isitpriming
itinerary jamestreet jewels joke
jokers jumping2 jumpontree justright
kfc knapsack knightmoves labels
labs ladybugs laptop lazy_robot
lboard lcm lcpupqst lcs
leave leenbeetree leftout leftright
lemonade lemonade2 lengthsort letters
levelingup levenshtein lightningrod lineup
lineup2 lis lis_easy littlejohnny0
littlejohnny1 littlejohnny2 littlejohnny3 littlejohnny5
ljll ljubomora lllontree localexpress
logs lol lookback losingsleep
lostarray lostones lowelements lppfnlcst
lualectures luarulers luckynumbers2 lunchbox
lunchcombo lunchtime lvm magicboard
magiccarps magicspell magicstring magicwand
maintainsum makingparallelograms management mandarins
manyjobs mathclass matheletes mathmadness
matrixrotation matsuri maxavg maximum
medianheap medianstring mergeguessproblem mergevectors
milkweed mindeque minimise minimum
minstack miracleflover missingnumber modsum
modules modulochain moka moneychanger
monkeyjourney monopoly monstergo monsters
monsters2 motest motest2 mothertounge
motivation mountain mountains movingbasement
movingkids mrt mrt2 mugger
multiple multipleswith8 neckties nemo
nerdinvitation nevergiveup newjeans nextprime
nicenumber nihonese ningning nis
nombor noodlestore nostatement notduckhunt
nou nprime ntuc numberfun
numbergame numberspeak numericalstrings ny_mathexam
ny_unwind nycheer nycoordinates nylunchtime
nystudy obstacletree oddoneout oddqueries
omnomnom omnomnom2 oneforone ontheedge
openingshop0 optmilk oranges2 orchard
oridance orz packaging packingducks
padoru paint pairofballs pairsums
palindromicfizzbuzz pancake pandacity pandaeyes
panicbutton papaya parallelogramisation parallelogramisation2
party party_noi pascal payraise
peakfinding peddler peepeepoopoo penguinfood
penguingathering penguinmountain perfectprimes permutationgrid
photo photofinish physics picnic
pigeonhole pigeons pilot ping
plagia plantingpotatoes2 platonic platonic10
platonic11 platonic12 platonic13 platonic16
platonic17 platonic2 platonic27 platonic28
platonic29 platonic3 platonic4 platonic5
platonic6 platonic9 playlist playlist2
poi pokenumbers poklon polyomino
ponschool postcard potatoqueue potatosalad
potatotree potionseasy potionshard powerfulmaxsum
powervillage pplow prefixsums prime
primeage primefactorization primepie primesort
priorityqueue prisoners problematicjourney problemsetter
problemsetter2 progressionspells progressive promotion
psle purplecandy pushups pythonlist
quillvsowl rabbitbars rabbiteatrabbit rabbitjoke
rabbitmeeting rabbitpainting railgun railway
rainbowrabbit rangerangequery rank raptorinc
razlika rblock reading reciprocals
replacedigits replacingpavement restaurant reverse
reverseandmin reversiblecampaign rhythmscore rightangtri
rmaxq robotbombs robotonring1 robotonring2
robotrotation robots2 rollercoaster rootedlca
rop rotarylock round_up_division routers
routine runaway runway sadtrainer
sadtrainer2 samelength sana sandd
scalars scanner scicom sealevel
seats2 secret segmenttree segmenttree2
segmenttreebeats september sequence_apio shamelessad
shamelessad2 shamelessad3 shamelessad4 shamelessad5
shamelessad5_ex sherlockinversions shiritori shiritori_ex
shops shortest sightseeing sightseeing2
simcity simp simplebridges singlefile
singleflip sixseven skillmoves skips
slidefk slimes smallprimes smurf
smurfpaths snack snacks snake
snakenladder snowball socks solonim
sonictheparallelogram soos soos2 sort
sort2 sorting2 sortingtrainers sos
speakers specialgirlfriends spellofweakness splithunny
spreadsheet squidzofrenzic ssoca stability
staircase stamps stamps2 stepgame
stickytape stones stoningame stonk
subgraphs subknapsack subperm subsetmex
subtaskstitching sudoku2 sum sumint
summarising2020 summarising2023 summarising2024 summit
sumofdigits sumsumdigit supermarket supperbox
supplies swapbuildings swapsort swayingflowers
swords taskmanaging taxcollection team
telephone teleporting thedarknight thumper2
tickethandling timeexam topical tourism
tourist tourist_noi towers train
train_ex traineeline trainorbus trains
tralalerolarila transform transmit trashinteractive
travel trippitroppi triusis trivialexam
trivialexam_ex_ex trivialmaths trollingbribritt tungtungtungtungtungsahur
twoarrays twochoices twomeals typicalstairs
typo typoswap ultimateifelse uniquenumbers
uniquenumbers_easy universe vainish verticallychallenged
veryeasymath veryeasyproblem videogames visitor
volcano voting wabbit wabot
walking warp waterbomb waterbottles
waterbottles2 waterbottles3 weddingcoins whackamole
whaleaura whalegroups whalemewing whaleroles
whiteboardgame whoatethefries winter woodcutter
workload workoutplan wormholes wronganswer
wrongreverse wv xmas xorb
xortree xuehuapiaopiao yayornay yogurt
youtubealgo yunah zanesgift zanesletters
zanespresents zooqueue