Halogen's profile

Name Yap Yuan Xi
School NUS High School of Math and Science
Role cmanager
Country Singapore
View Submissions
Solved Problems
01knapsack 0405 1609 1821
3nplus1 3nplus1II 4russians 4sum
GSS addition addition2 addk
adjlist adjmatrix aircon amicablecats
ancestor anutforajaroftuna applefarm area
area_noi armpit arrayfind arrayproblem
askonegetonefree assembly atm bacteria
ballgame bananafarm bananasmoothie bank
baseplans beareatrabbit beautifulbrackets becomingred
bestplace binarycoins binaryroads bobek
bosses boundlessboxes boxispull bracketex
brackets bracketscore bracketsuperseq bracketsyndrome
brick bridge_apio15 bubblesort buffet
bunnyscore burgers buycomputer buygifts
candies candyboxes candymountain_ex car
card carpark carrots catchingcheaters
catfight catlunch ccs change
chessislands christmasfeast clique clocktower
closingshop coinbag coincombinations coinjourney
coke collectmushrooms collectmushrooms2 collectmushrooms3
collectmushrooms6 combo commando competition
construct container contestcalc conversations
conversations_easy convexhull crypto cuberoot
cudak cups decayedbridges deque
descsort diamond dice digits
digitsum dijkstra dinowalk doll_noi
dotjoin duckbuttons dyingpolynomial dynamicdag
eatcake eeducation eelimination eescapism
eevacuation election employee entropy
entropy2 evenorodd everyonewinstherace exam
examinations exhibition exponentiate exponentiate_ex
feast feelgood fencing fenwicktree
fertile fibo fireandbeary fizzbuzz
flamethrower flappyrabbit flights flip
flipcards floors flybot foreveralone
fractionalmultiset friendlyrooks frog3 frogs
fruitsequences fuel garden_ioi08 gcd
gecko general gerrymandering gift
girlfriend globalwarming globalwarming_ceoi goinghome_agc
goofyrooks gotoschool graphcraft grassplant
greeting guanine guards guards_ex
guessarray hamster1 hashcollision heatwv
hedgehogcrimes_easy helloworld helloworld2 history
hld housing hunter illuminate
inheritance installingapps inversemax inversions
ippt iqtest iqtest2 iqtest3
jumping2 jumpontree justright knightmoves
kthsubstring labels ladybugs lazycat
lboard lcs leftright lengthsort
letterstamper lightningrod lineup lis
lis_easy ljll ljubomora llis
localexpress lostarray lps lualectures
luarulers lunchbox lunchcombo lvm
magicwand makingparallelograms management maximum
medianheap medianstring merchant_o milkweed
minimum minstack modules moneychanger
monsters mountains mrt mugger
multipaths neckties nian nihonese
nis nonboringsequences nprime numbers
numericalstrings obstacletree omnomnom omnomnom2
openingshop optimalsubseq optmilk oranges2
padoru paint pairs pairsums
pandacity pandaeyes park partitiongame
party party_noi payraise peakfinding
peddler penguinfood penguinmountain performance
photo picnic pigeonnests pigeons
pilot ping pizzeria poi
poklon potatosalad potatotree power
powervillage prefixsums prime primefactorization
primesort problematicjourney psle purplecandy
quillvsowl rabbitbars rabbiteatrabbit railway
rank razlika rblock rebuild
reciprocals rectangleoutline redblacktree removeedges
reopening replacedigits rightangtri rmaxq
rmq roadsideadverts rootedlca rotarylock
routers sailor sandd sealevel
segmenttree segmenttree2 sherlockinversions sightseeing
sightseeing2 simp singlefile smallprimes
smallprimes_ex smurf smurfberries smurfpaths
snacks snakenladder snakesnack2 snapknack
solonim sonya sortbooks speakers
spellofweakness splithunny spy squidzofrenzic
stackweights staircase stamps stepgame
sterilizing stickytape stones stonk
subgraphs subtaskstitching sumint summit
supermarket supplies swapsort swords
taxcollection timeexam tourist_noi towerdefense
towers train train_ex trainorbus
trains transform travel treepruning
treepruning2 typo uniquenumbers universe
unluckyfloors unmerge wabbit wabot
walking watching weddingcoins workload
xmas xortree zooqueue