ryangohca's profile

Name Ryan Goh Choon Aik
School Raffles Institution
Role admin
Country Singapore
View Submissions
Solved Problems
01knapsack 0405 1402 1503
1609 1821 3nplus1 3nplus1II
4cuts 4russians 4sum 727
7up GSS abbb acorns
addition addition2 addone addsubtract
adjacentswaps adjlist adjmatrix aesthetic
aircon airline aliens aliens_ioi
amicablecats ancestor ants appeal
applefarm appletree arcade area
armpit arrangetoys arrayfind arrayproblem
artswap assembly assignpaths atm
bacteria badknapsack badnim badpotato
badtree ballgame ballot ballsofbuma
bananadance bananafarm bananafever bananasmoothie
bank baseplans baseplans_ex basketball
beareatrabbit beautifulbrackets becomingred berlandtaxi
bestplace bichrome binarycoins binaryroads
binaryseq binomial blanko blocks
bobek bombing bombing2 books
bookshelf bore boring bosses
bosubaiko bottle boundlessboxes boxes_hkicpc
boxispull boxoffice bracketex bracketflip
brackets bracketscore bracketsuperseq bracketsyndrome
brick bridge_apio15 bubblesort bucketstacking
buffet bunchlocks bunnyscore burger
buycomputer cake cakerun camels
candies candies_joi candymountain_ex candyshop
car card cardgame cardgame2
cards cardtrick carpark carrots
cashmoney catalansum catchingcheaters catfight
catgameshow catleap catlunch catnames
catteams cave ccs centroid
change charges cheerleaders chemistry
chessislands chinese chocolate christmasfeast
christmasfiboseq christmastree christmasturkeyfarm christmaswall
christmaxtrees chunlian climatechange clipboard
clique clockpalindrome clocktower closedpath
closedrooms cloudcomputing coinbag coincombinations
coinjourney coke collaboration collectmushrooms
collectmushrooms2 collectmushrooms3 collectmushrooms4 collectmushrooms5
collectmushrooms6 colorgraph colour colourblind
commando commonsubstring compact competition
construct container contestcalc convention
conversations conversations_easy convexhull cookieclickeralpha
corporate countalp countingagain couples
cousin cowland cp2booksales cross
crypto cuberoot cudak cups
cycling deathray decayedbridges deda
deliveroo delivery deque descsort
diamond dice digits digitsum
dijkstra dinowalk discharging distribution
divisibility divsum divsum_dec18 dna
dna_ioi domine dominoes doodles
dotjoin doubletrouble dquery dragonfly
dreaming drones duckduckgo ducknuggetconvention
duckwalk duels dyingpolynomial eatcake
eeducation eelimination eescapism eevacuation
eexploration election employee entropy
entropy2 enumeratingbrackets equals erp
escalation escape escapesadland evenorodd
exam examinations excombo exoticplants
explosion exponentiate exponentiate_ex f7
feast feedthewallabies fencing fencing2
fenwicktree ferries fertile fibo
fibotree fire fireandbeary firecracker
firefighting firelord fizzbuzz flamethrower
flights flood flooding floors
flowering flybot foodchain foreveralone
forkintheroad fortunetelling fourbuckets fractionalmultiset
fractions frog3 frogs fruits
fruitsequences fuel fuelstation funfair
funnytree garaza garden_ioi05 garden_ioi08
gcd gecko general generosity
gerrymandering gift girlfriend globalwarming
globalwarming_ceoi globalwarming_ex goinghome_agc goodmorning
goodseq goodsubsegments gotoschool graph
graphcraft graphoverflow grassplant grazing
greenbeans greeting grid gridgame
growingtrees guanine guards guessarray
guessqueue hacker hacking haiku
hamster1 harddisk hashcollision hdb
heatwv hedgehogcrimes_easy hellokitty helloworld
helloworld2 hipercijevi historical history
holdinghands hole hoofpaperscissor horses
hotspot housevisit housing hunter
ihate1111 illuminate indivisibility inequality
inequality2 inequality3 infiniteloop inheritance
installingapps interestring invasion inversemax
inversions island ispit istj
jams jedan joke journey3
jumper jumping2 justright kickingshoes
knapsack knightmoves kronican kthsubstring
kusac labels ladybugs lambsrespite
lampposts lasers latex laughter
lazycat lboard lcm lcs
leastround leave leftright lemmas
lemonadestand lengthsort letters levelingup
levenshtein lfs lightningrod lineup
lineup2 lis lis_easy ljll
ljubomora llis localexpress logs
lol lopov lostarray lppfnlcst
lppfnlcst2 lppufdsrb lps luckynumbers
luckynumbers2 lunchbox lunchcombo lvm
magick magicwand makemst malcolm
management mandarins manycolours marathon
mate math mathtest maximum
medianheap medianstring mememagic merchant
merchant_o mercurypoisoning mergers mice
midas milkweed minimetro minimum
mining minstack mobitel modsum
modules molecules moneychanger monochromecat
monopoly moosic morepaths mountains
mrbeancurd mrt mugger multipaths
multiple mushroomfarm naan naptime
neckties nemo newlottery nian
niangao nihonese nis nonboringsequences
notebook nprime numbers numericalstrings
nutritionist ohbabyntriples omnomnom omnomnom2
openingshop optimalsubseq optmilk orangecollector
orangeroad oranges2 orchard orchard2
oridance orlando padoru paint
pairs pairs_atcoder pairsums palindromicfizzbuzz
pancake pandacity pandaeyes pandaski
pandasoldiers papaya parade partitiongame
party pascal pavement payraise
peakfinding peddler penghulu penguinfood
penguinislands performance picnic pigeonhole
pigeonnests pigeons pillars pilot
ping plagia planning ples
poi pokeadd pokemonmaster pokenumbers
poklon portals postcard potatosalad
potatotree potionseasy potionshard power
prefixgcd prefixsums pressstart prime
primefactorization primepie primesort prisoners
problematicjourney progression promotion psle
pushups puttingstrings pythonindentation quality
quillvsowl rabbitbars rabbitbridges rabbiteatrabbit
rabbitlineup rabbitmeeting rabbitpainting rabbitplane
rabbitradar rabbitroad rabbittolls race
radiance radioactive ragingthunder railway
rainbowrabbit rank rarsum rarwall
ratar razlika rblock rebuild
reciprocals rectangleoutline relaymarathon relutree
removeedges removeelements replacedigits republiccity
restaurant riggedroads rightangtri rmaxq
rmq roadsideadverts robobear robot2
robots roots rotarylock routers
routes rubies runway safety
sailor sale samelength sandd
sardines sawmills scalars scanner
schedule scrivener sealevel secret
secret_mco segmenttree segmenttree2 segmenttree3
selectingintervals selfdefence selfpermutation sequence
sequence_apio sherlockinversions shikandgame shopping
shortest sightseeing sightseeing2 simcity
simp singlefile singleflip skillmoves
skyline skyscraper_apio15 smallprimes smallprimes_ex
smurf smurfberries smurfpaths snack
snail snakecode snakenladder snakesnack
snakesnack2 snapknack snowcow snukethewizard
solarstorm solonim sonya sort
sortbooks sortedandsorted spaceinvaders speakers
special spellofweakness spiderweb splithunny
spy square_ioi squarerect squidzofrenzic
stackweights stamps stepgame sterilizing
stickytape stones stonk straight
strawberry streetlamps stringsofimpurity subgraphs
subknapsack subtaskstitching subwaytrip sumint
summarising2020 summarizing2021 summit sumo
supermarket supperbox supplies surnames
swapsort swimming taxcollection telepathy
thanossort thanossort_st4 threetowers thunderstorm
timeexam timeleap toblerone toll
tomskitchen tour tourist towerdefense
towers toy train train_ex
trains trains_mco transform travel
treecutting trekking triangles trianglesum
triusis trivialmaths troubles twomeals
typicalstairs typo ufo umbrella
uniquenumbers uniquepath universe unluckyfloors
unmerge vainish variety village
visiting visitingsingapore voting votingcities
vouchers wabbit wabbitosu wabot
walking wall wallabyhop wallisstop
wandering warp watching weddingcoins
werewolf wires wiring woodcutter
workload workload2 workoutplan wormholes
xmas xorb xorreplace xortree
youngmaids zooqueue