PlayVoltz's profile

Name Ryan Shaw
School Hwa Chong Institution (prev: Ngee Ann Secondary School)
Role admin
Country Singapore
View Submissions
Solved Problems
01knapsack 0405 1111galpassword 1402
1402_2 1503 1609 1821
3nplus1 3nplus1II 4cuts 4in1
4in1again 4russians 4sum 727
7up GSS NYAerion NYCanteen
NYSSW_easy NYSport NYTrainers OrXor
Pickaxe SameMapInTheRpgWorld UCFJ Unbalanced
WA1 abbb abc_apio23 abcs
acorns add1 add1_easy addictiontoworry
addition addition2 addition3 addk
addone addsubtract adjacentswaps adjlist
adjmatrix adventure aesthetic aircon
airplane alienalien aliens aliens_ioi
alphabrackets amicablecats ancestor ants
anutforajaroftuna appeal applebaskets applefarm
appletree arcade archaeologist arcwrecker2
area area_noi armpit arrangetoys
arrayfind arraygraph arraypartition arrayproblem
artswap askonegetonefree assembly assignpaths
assistance atleasttripledate atm attention
attractions babyproduction bacteria badchef
badknapsack badnim badpotato badtone33
badtree ballgame ballot ballsofbuma
bananafarm bananafever bananaland bananasmoothie
bank banks basement baseplans
baseplans_ex basketball battleship beacon
beareatrabbit beautifulbrackets belittle berlandtaxi
bestplace between2arrays bftrouble bichrome
bigbinarytree binarycoins binarylock binaryroads
binaryspells binarystring bingeeating bingo
binomial biscuits bizarrebuffet blackmagic
blank blanko boardvision bobek
bombing bombing2 books bookshelf
boring bossbattle bosses bosubaiko
bottle boundedpermutation boundlessboxes boxes
boxes2 boxes_hkicpc boxhaskey boxinbox
boxinbox2 boxispull bracketex brackets
bracketscore bracketsuperseq bracketsyndrome brainrot
breakfast brick bridge_apio15 bridges_apio19
bubblesort bucketstacking buffet build
bunnyscore burger burgers buycoke
buycomputer buygifts buyingcandy cake
cake3 cakerun camels candies
candies2 candies_joi candles candyboxes
candymountain_ex candyshop car card
cardgame cardgame2 cards cardtrick
carpark carrots casino catchingcheaters
catfight catgameshow catleap catlunch
catnames cats catsort catteams
cave ccs celldivision centroid
chaewon change charges cheerleaders
chessislands chickensoup childsetter childsetter2
childsetter3 childvschild chimera chinese
chocolate chokolit choochoo choose2eat1
choosingcandies chope christmasfeast christmasturkeyfarm
christmaxtrees cht chunlian cinema
cipele citymapping clique clocktower
closedpath closedrooms closing closingshop
cloudcomputing cny coin coinbag
coincombinations coingame coinjourney coinmaster
coins coke cokelesssugar cokemoresugar
collaboration collectmushrooms collectmushrooms2 collectmushrooms3
collectmushrooms4 collectmushrooms5 collectmushrooms6 colorgraph
colour colourblind colourfulpaths combo
commando commonsubseq commonsubsequence commonsubstring
compact competition compleecode conductslip
conlang construct container contestcalc
convention conversations conversations_easy convexhull
cookie cookieclickeralpha cooperation coprimecodependence
copyandpaste corporate countalp countingagain
couples coupons cousin cowland
cp2booksales crab createnumber cringemeter
crypto cuberoot cudak cups
curtains cyberland_apio23 cycling datacenters
deathray decayedbridges deciphering_zane deciphering_zane_4
deciphering_zane_ex decrypt deda defense101
deforestation deletingnumbers deliveringpotatoes deliveroo
delivery democracy departure deque
descsort destroy devil devour
diamond diamond_usaco dice diesel
differencearray digits dijkstra dinnerbox
dinowalk discharging discord distribution
diversesegments divideby2 divisibility divsum
divsum_dec18 dkdk dna dna_ioi
dogmonkey doll_noi domine dotjoin
doubleflip doubletrip doubletrouble downbad
dquery dragonfly dreaming drones
drunkpalindrome duckbuttons duckduckgo duckeatant
duckeatduck duckhunt duckhunt2 duckhunt3
duckhunt4 duckhunt5 duckhunt6 duckhunt7
duckhunt8 duckhunt9 ducknuggetconvention ducktransport
duckwalk duckwander duckwar duels
dummy dungeons2 dyingpolynomial dynamicdag
dzumbus eatcake eating economics
eeducation eelimination eeniemeenie eescapism
eevacuation eexploration eight election
employee entropy entropy2 equals
erp escalation eta evenorodd
everyonewinstherace exam examinations examstress
examstress2 examstress2_ex exhibition exhibition2
exoticplants expansion experimentexplodeexpel explosion
explosives exponentiate exponentiate_easy exponentiate_ex
f7 fabric factorial factorial_easy
factories fakeidol feast feedtheduck
feedthewallabies feelgood fencing fenwicktree
fenwicktree_easy ferries fertile fibble
fibo fibo_easy figurines finalday
findandprevent findinggf findinggrass findinggrass_ex
findingpavement findmultiple fireandbeary firecracker
firefighting firelord fireworks firstabc
fish fitnesscorner fizzbuzz flamethrower
flamethrower_ex flappyrabbit flights flip
flipcards flipthat floors flowering
flows flybot foodchain football
foreveralone forkintheroad fortunetelling fourbuckets
fractional_knapsack fractionalmultiset fractions fraud
friend frog3 frogs fruits
fruits_noi fruitsequences fsylll fuel
fuelstation funfair funniernim funnyhat
funnynim funnysequence galaxycollapse gap
garden garden_ioi05 garden_ioi08 gcd
gecko general generosity gentlepairs
gerrymandering gerrymandering_ex gfriendmania gfriendtree
ghostrule giantduck gift girlfriend
giselle givinggifts globalwarming globalwarming_ceoi
globalwarming_ex glottalstops gohcart gohcart2
goinghome_agc goneviral goodbye goodchef
goodgame goodmorning goodprogrammer goodseq
goofyarray goofyrooks goombatower gotoschool
gotoschool_ex gotosleep gotoubun grapevine
graph graphcraft graphoverflow grassplant
gravity grazing greenbeans greeting
grid gridgame growingtrees guanine
guards guards_easy guards_ex guessarray
guessproblem guessproblem2 guessproblem3 guessproblem3_ex
guessproblem4 guessproblem4_ex guessqueue gwynethandtree
gymbadges hacked hacker hacking
hackinggate hackingscores hackthectf hammeringnails
hamster1 happyarrays harddisk hashcollision
hdb heatwv hedgehogcrimes_easy hello
hellokitty helloworld helloworld2 hiddenarray
hipercijevi historical history hld
hole holiday homeworkextension hoofpaperscissor
hop horses hotelhunt hotelhunt_easy
hotelhunt_ex hotelhunting hotspot housevisit
housing humantrafficking hungrycats hungryrabbits1
hungryrabbits2 hunter hurt hypeboy
identifyinggirlfriends ihate1111 ihatenonint illuminate
imagination impossiblegame index indextimesa
indivisibility infiniteloop infinitezoo inheritance
inspections installingapps integralmania intercastellar
interestring invasion inversemax inversioncounting
inversions ippt iqtest iqtest2
iqtest3 iroha island island_boi
islands2 ispit istj itinerary
jamestreet jams jewels jjooii2
joke journey3 jumper jumping2
jumpontree jumps justright karina
kas kfc kickingshoes knapsack
knightmoves koopatroopacave kthsubstring kusac
labels labs ladybugs lambsrespite
lampposts lamps landgame laptop
lasers latex laughter lazycat
lboard lcm lcs learning
leave leenbeetree leftright lemmas
lemonade lemonade2 lemonadestand lengthsort
letters letterstamper letterstamper_ex levelingup
levenshtein lfs lightningrod lightsflip
lineup lineup2 lis lis_easy
ljll ljubomora llis lllontree
localexpress log logs lol
lonelybeavers lopov losingsleep lostarray
lostones loveletter lowelements lppfnlcst
lps lratio lualectures luarulers
luckynumbers2 lunchbox lunchcombo lunchtime
lvm magicboard magiccarps magick
magicspell magicstring magicwand maintainsum
makemst makingparallelograms malcolm malguem
mamamintaplusa management mandarins manycolours
manyjobs markinghouses mate math
mathclass matheletes mathexam mathmadness
mathtest mathtree matsuri maxavg
maximum maximummonogonosity maximumtriangle medianheap
medianontree medianstring melons_joig meltylandnightmare
mememagic merchant merchant2 merchant_o
mercurypoisoning mergeguessproblem mergers mice
midas milkweed mindeque minimetro
minimise minimum mining minju
minstack miracleflover missingnumber mobitel
modsum modules modulochain moka
molecules moneychanger moneytree monochromecat
mononono monopoly monsters monsters2
moosic more_lca more_lca2 morefun
morexiaoyang motest motest2 motest3
mothertounge motivation mountain mountainbridges
mountains movingbasement movingkids mrbeancurd
mrbeast mrt mrt2 mugger
mulgogi multipaths multiple multipleswith8
mushroomfarm naan naptime neckties
nemo nerdinvitation network nevergiveup
newjeans nextprime nian nicenumber
nicewelltakethat nihonese ningning nis
nombor nomorebp nonboringsequences noodlestore
nostatement notebook notimetodry nou
nprime nprime2 numberbuilding numberfun
numbergame numbers numberspeak numberspiral
numericalstrings nutritionist ny_mathexam ny_unwind
nycheer nycoordinates nylunchtime nypromo
nystudy nytrainer_hard obstacles obstacletree
oddoneout omnomnom omnomnom2 onlineexam
ontheedge openingshop openingshop0 optimalsubseq
optmilk orangecollector orangeroad oranges2
orchard orchard2 oridance orz
outing overthinking packaging packingducks
packingpests padoru paint paint_apio
pairofballs pairs pairs_atcoder pairsums
palindromicfever palindromicfizzbuzz pancake pancake_ex
pandacity pandaeyes pandanumbers pandaski
pandasoldiers papaya parade parade_nyoi
parallelogramfest parallelogramisation parallelogrampairs park
partitiongame party party_noi pascal
password passwords pavement payraise
peakfinding peddler peepeepoopoo pekora
penghulu penguinex penguinfood penguingathering
penguinislands penguinmountain perfectprimes performance
permutationgrid permutationswap personalspace photo
photo_nyoi photograph physics picnic
pigeonhole pigeonnests pigeons pillars
pilot ping pipes pizzeria
placingrouters plagia planning plantingpotatoes
plantingpotatoes2 playlist ples poi
pokeadd pokenumbers poklon police
polyomino ponteng portals postcard
potatoqueue potatosalad potatosqueues potatotree
potionseasy potionshard power powervillage
pplow prefixgcd prefixsums pressstart
prime primeage primefactorization primepie
primesort prisoners problematicjourney problemsetter
problemsetter2 progression progressionspells promotion
psle purplecandy pushups puttingstrings
pythonindentation qualityinspections qualitytime queuecutting
quillvsowl rabbitbars rabbitbridges rabbiteatrabbit
rabbitjoke rabbitmeeting rabbitmilk rabbitpainting
rabbitplane rabbitroad rabbittolls race
radioactive railway rainbow rainbowfish
rainbowrabbit rainbowroad rainbowroad_ex rangedeleting
rangerangequery rank raptorinc rarsum
rarwall rating razlika rblock
rbpoints reachability reachability2 reading
rebuild reciprocals reciprocate rectangleoutline
redblacktree relaymarathon removalcosts removeedges
removeelements reopening repairs replacedigits
replacingpavement republiccity restaurant reverseandmin
reversiblecampaign richzhe riggedroads rightangtri
rmaxq rmq roadsideadverts roadtrip
robberduck robobear robotbombs robotonring1
robotonring2 robotonring3 robotrotation robots
robots2 rockclimbing rolling rooms
rootedlca roots rop rotarylock
routers routes routine royalguards
rubies runaway runway rushing
sadtrainer sadtrainer2 safety sailor
sale samelength sana sandcity
sandd sardines sawmills scalars
scanner schedule scrivener sculptures_apio15
seagame sealevel seats2 secret
segmenttree segmenttree2 segmenttree3 segmenttreebeats
selectingintervals selfdefence selfpermutation selfstudy
sellingpotatoes semiconnected september sequence
sequence_apio sequence_apio23 sequences settingquestions
shamelessad shamelessad2 shamelessad3 shamelessad4
shamelessad5 shamelessad5_ex sherlockinversions shikandgame
shiritori shiritori_ex shirts shoes
shoop shops shorten shortest
showertheduck shuffling shuttlerun sightseeing
sightseeing2 sillysort simcity simp
simplebridges simplemath2 simpletask singlefile
singleflip skibuddy skiing skillmoves
skyline skyscraper_apio15 slidefk slimes
smallprimes smallprimes_ex smokeflower smurf
smurfberries smurfpaths snack snacks
snail snake snakecode snakenladder
snakesnack snakesnack2 snapknack sniper
snowball snowcow snukethewizard soccer
socks solarstorm solonim sonictheparallelogram
sonya sort sortbooks sorting2
sortingtrainers sortingtrainers2 sos spaceinvaders
speakers special specialgirlfriends spellofweakness
spiderweb spiraldance split2 splithunny
splittingpower spy square_ioi squarerect
squidzofrenzic ssoca ssw stackweights
staircase stamps stations stepgame
sterilizing stickytape stones stoning
stonk stories strangedevice strawberry
streakmanipulation streetlamps streets strikes
stringsofimpurity subgraphs subknapsack subsetmex
subtaskstitching sudoku sudoku2 sufferingprogrammer
sum sumalllis sumint summarising2020
summarising2023 summarising2024 summarizing2021 summit
sumo sumofdigits sumsumdigit sunshine
superduper supermarket superpiece supertrees
supperbox supplies surnames swap
swapsort swayingflowers swimming swords
taxcollection taxes team tears
telephone teleporting testing4 thanossort
thanossort_st4 thedarknight thief threetowers
threetwentyoneam thumper2 thunderstorm tickethandling
tiles timeexam tmp toblerone
toilettime toll tomandjerry topical
torturingaccountant touchinggrass tour tourism
tourist tourist_noi towerdefense towers
towers_noi toxic toxic2 train
train_ex traineeline trainorbus trains
trains_mco trampoline transform transmit
transportingpotatoes trapezes trashinteractive travel
treasurehunt treasures treecutting treepruning
treepruning2 triangles trianglesum triusis
trivialexam trivialexam_ex trivialexam_ex_ex trivialmaths
trollingbribritt troubles truck twoarrays
twochoices twomeals typicalstairs typo
typoswap ultimateifelse umbrella uniquenumbers
uniquepath unitedcows universe unluckyfloors
unmerge usefft1 vainish valley
variety verticallychallenged veryeasymath veryeasyproblem
videogames village visitinggf visitingsingapore
visitor volcanic voting votingcities
vouchers wa2 wabbit wabbitosu
wabot walking wall wallabyhop
warp warp2 watching waterbomb
waterbottles waterbottles2 waterbottles3 weddingcoins
weightedguess whackamole whatisthisactf whiteboardgame
whoatethefries wikipedia winter wires
wiring wonhee woodcutter workload
workload2 workoutplan worldend worldline
wormholes wronganswer xmas xorb
xortree xuehuapiaopiao yaleuniversity yayornay
yogurt youngmaids youtubealgo yunah
zanesescape zanesgift zanesletters zanespresents
zoo zooqueue