syy's profile

Name Song Yiyang
School Raffles Institution
Role admin
Country Singapore
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01knapsack 0405 1402 1503
1609 1821 3nplus1 3nplus1II
4cuts 4russians 4sum 727
7up GSS abbb acorns
addition addition2 addk addone
addsubtract adjacentswaps adjlist adjmatrix
aesthetic aircon airline aliens
aliens_ioi amicablecats ancestor ants
appeal applefarm appletree arcade
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arrayproblem artswap askonegetonefree assembly
assignpaths atm bacteria badknapsack
badnim badpotato badtree ballgame
ballot bananafarm bananafever bananasmoothie
bank baseplans baseplans_ex basketball
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bridges_apio19 bubblesort bucketstacking buffet
bunchlocks bunnyscore burger buycomputer
buygifts cake cakerun candies
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cardtrick carpark carrots cashmoney
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changingcolours charges cheerleaders chemistry
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coke collaboration collectingstamps3 collectmushrooms
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conversations conversations_easy convexhull cookieclickeralpha
countalp countingagain couples cousin
cp2booksales crypto cuberoot cudak
cups cycling dateornot deathray
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departure deque descsort destroy
diamond dice diesel digits
digitsum dijkstra dinowalk discharging
distribution divisibility divsum divsum_dec18
dna dna_ioi domine dominoes
doodles dotjoin doubleflip doubletrouble
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ducknuggetconvention duckwalk duckwander duckwar
duels dyingpolynomial eatcake eating
edgeflip eeducation eelimination eescapism
eevacuation eexploration election elephants
employee entropy entropy2 equals
erp escalation escape escapesadland
evenorodd exam examinations excombo
exoticplants explosion exponentiate exponentiate_ex
f7 feast feedthewallabies fencing
fencing2 fenwicktree ferries fertile
fibo fibotree findandprevent findtree
fireandbeary firefighting firelord fireworks
fizzbuzz flamethrower flappyrabbit flights
flood flooding floors flybot
foodchain football foreveralone fortunetelling
fourbuckets fractionalmultiset fractions fraud
frog3 frogs fruits fruitsequences
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gecko general generosity gerrymandering
gift girlfriend globalwarming globalwarming_ceoi
globalwarming_ex goinghome_agc goodmorning goodseq
goodsubsegments gotoschool graphcraft graphoverflow
gravity grazing greenbeans greeting
grid gridgame growingtrees guanine
guards guessarray guessqueue gwynethandtree
hacker hacking haiku hamster1
harbingers harddisk hashcollision hdb
heatwv hedgehogcrimes_easy hellokitty helloworld
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horses hotspot housing hungryrabbits1
hungryrabbits2 hunter hyperoperations ihate1111
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infiniteloop infiniteseq inheritance installingapps
interestring invasion inversemax inversions
iqtest iqtest3 island istj
jams jedan jjooii2 joke
journey3 judgeantibreaker jumper jumping2
jumps justright kfc kickingshoes
killanton knapsack knapsack2 knightmoves
kthsubstring ktupleflip labels ladybugs
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laughter lazycat lboard lcm
lcs leastround leave leftright
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levelingup levenshtein lfs lightningrod
lineup lineup2 lis lis_easy
ljll ljubomora llis localexpress
logs lol lopov lostarray
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lunchcombo lvm magick magicwand
makemst malcolm mamamintaplusa management
mandarins manycolours marathon marathon_usaco
mate math mathtree maximum
medianheap medianstring mememagic merchant
merchant_o mercurypoisoning mergecards mergers
messy mice midas milkweed
minimetro minimum mining minstack
mobitel modsum modules modulochain
molecules moneychanger monochromecat monopoly
moosic more_lca more_lca2 morepaths
mountains mrbeancurd mrt mugger
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neckties nemo newlottery nian
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omnomnom omnomnom2 openingshop optimalsubseq
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parade partitiongame party pascal
password pavement pawns payraise
peakfinding peddler pekora penguinfood
penguinislands perfectprimes performance persistentlists
picnic pigeonhole pigeonnests pigeons
pillars pilot ping pizzeria
plagia planning poi pokeadd
pokenumbers poklon ponteng postcard
potatoqueue potatosalad potatotree potionseasy
potionshard power powersupply prefixgcd
prefixsums prefixsums2 pressstart prime
primefactorization primepie primesort prisoners
problematicjourney progression promotion psle
purplecandy pushups puttingstrings pythonindentation
quality qualitycontrol queuestack quillvsowl
rabbitbars rabbitbridges rabbiteatrabbit rabbitgifts
rabbitlineup rabbitmeeting rabbitpainting rabbitplane
rabbitroad rabbittolls race radiance
radioactive ragingthunder railway rainbowrabbit
rainbowroad rank rarsum rarwall
ratar razlika rblock reading
rebuild reciprocals rectangleoutline relaymarathon
relutree removeedges removeelements replacedigits
republiccity restaurant riggedroads rightangtri
rmaxq rmq roadsideadverts robobear
robot2 robots rolling rootedlca
roots rotarylock routers routes
routine rubies runway sailor
sale samelength sandd sardines
sawmills scalars scanner schedule
scrivener sealevel secret seedflare
segmenttree segmenttree2 segmenttree3 selectingintervals
selfdefence selfpermutation sequence_apio sherlockinversions
shikandgame shoes shopping sightseeing
sightseeing2 simcity simp singlefile
singleflip skillmoves skyline skyscraper_apio15
smallprimes smallprimes_ex smurf smurfberries
smurfpaths snack snail snakecode
snakenladder snakesnack snakesnack2 snapknack
snowball snowcow snukethewizard solarstorm
solonim sort sortbooks sortedandsorted
spaceinvaders speakers special spellofweakness
spiderweb splithunny spy square_ioi
squarerect squidzofrenzic stackweights stamps
stations stepgame sterilizing stickytape
stones stonk stories straight
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subtaskstitching subwaytrip suffixarray sumint
summarising2020 summarizing2021 summit supermarket
supertrees supperbox supplies surnames
swap swapsort swayingflowers swimming
switches2 switches998244353 synchronization taxcollection
telephone tents thanossort thanossort_st4
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towerdefense towers toy train
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travel treecutting triangles trianglesum
triusis trivialmaths trivialmaths2 troubles
truck twomeals typicalstairs typo
ufo ultimateifelse umbrella uniquenumbers
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vainish variety veryeasyproblem village
visitingsingapore volcanic voting vouchers
wabbit wabbitosu wabot walking
wall wallabyhop wallabyland wallisstop
wandering warp watching weddingcoins
weightedguess werewolf wires wiring
wombats woodcutter workload workload2
workload_ex workoutplan wormholes xmas
xorb xorreplace xortree youngmaids
zooqueue