PlayVoltz's profile

Name Ryan Shaw
School Hwa Chong Institution (prev: Ngee Ann Secondary School)
Role superadmin
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
airline airplane alienalien aliens
aliens_ioi alphabrackets amicablecats ancestor
ants anutforajaroftuna aoi_fft aoi_game
appeal applebaskets applefarm appletree
aratherinterestingtube arcade archaeologist arcwrecker2
area area_noi armpit arrangetoys
arrayfind arraygraph arraypartition arrayproblem
artswap askonegetonefree assembly assignpaths
assistance atleasttripledate atm atomsplit
attackofthelitlosers attention attractions babyproduction
bacteria badchef badknapsack badnim
badpotato badtone33 badtree ballgame
ballot ballsofbuma bananafarm bananafever
bananaland bananasmoothie bank banks
basement baseplans baseplans_ex basketball
basketball_cpic battleship beacon beareatrabbit
beautifulbrackets beechtree belittle berlandtaxi
bestplace between2arrays bftrouble bichrome
bigbinarytree bigredarrow binarycoins binarylock
binaryroads binarysearch binaryspells binarystring
bingeeating bingo binomial biscuits
bitaro bizarrebuffet blackmagic blank
blanko boardvision boat bobek
bombardirocrocodilo bombing bombing2 books
bookshelf boring bossbattle bosses
bosubaiko bottle boundedpermutation boundlessboxes
boxes boxes2 boxes4 boxes_hkicpc
boxhaskey boxinbox boxinbox2 boxispull
bracketex brackets bracketscore bracketsuperseq
bracketsyndrome brainrot breakfast brick
bridge_apio15 bridges_apio19 bronzemedal bubblesort
bucketstacking buffet build bunnyscore
burger burgers buycoke buycomputer
buygifts buyingcandy cake cake3
cakerun calc camels candies
candies2 candies_ioi candies_joi candles
candyboxes candymountain_ex candyshop cappuccinoassassino
car card cardgame cardgame2
cards cardtrick carpark carrots
casino catchingcheaters catdog catfight
catgameshow catleap catlunch catnames
cats catsort catteams cave
ccs celldivision centroid chaewon
change charges cheerleaders chessislands
chickensoup childsetter childsetter2 childsetter3
childsetter4 childvschild chimera chinese
chocolate chokolit choochoo choose2eat1
choosingcandies chope christmasfeast christmasturkeyfarm
christmaxtrees cht chunlian cinema
cipele circuit citymapping clique
clocktower closedpath closedrooms closing
closingshop cloudcomputing cny coin
coinbag coincombinations coingame coinjourney
coinmaster coins coke cokelesssugar
cokemoresugar collaboration collectingstamps3 collectmushrooms
collectmushrooms2 collectmushrooms3 collectmushrooms4 collectmushrooms5
collectmushrooms6 colorgraph colour colourblind
colourfulpaths combo combostacking commando
commonsubseq commonsubsequence commonsubstring compact
competition compleecode conductslip conlang
construct construction 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
dayum 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 div3 diversesegments divideby2
divisibility division divsum divsum_dec18
dkdk dna dna_ioi do_you_like_me
dogmonkey doll doll_noi domine
dotjoin doubleflip doubletrip doubletrouble
downbad dquery dragonfly drama
dreaming drones drunkpalindrome duathlon
duckbuttons duckduckgo duckeatant duckeatduck
duckhunt duckhunt12 duckhunt13 duckhunt2
duckhunt21 duckhunt3 duckhunt4 duckhunt5
duckhunt6 duckhunt7 duckhunt8 duckhunt9
ducknuggetconvention ducktransport duckwalk duckwander
duckwar duels dummy dungeons2
dyingpolynomial dynamicdag dzumbus eatcake
eating eatinghealthy eatingkids eatingkids2
eatingparallelograms economics eeducation eelimination
eeniemeenie eescapism eevacuation eexploration
eight el_classico election election_joi
election_joi22 employee entropy entropy2
enwisen equals erp escalation
eta evans_peculiar_hobby evenorodd evenorodd_ex
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 factorymachines 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 flood
flooding2 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 funnyballs 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 gota
gotoschool gotoschool_ex gotosleep gotoubun
grapevine graph graphcraft graphoverflow
grassplant gravity grazing greenbeans
greeting grid gridgame growingtrees
guanine guardingtreasure guards guards_easy
guards_ex guessarray guessproblem guessproblem2
guessproblem3 guessproblem3_ex guessproblem4 guessproblem4_ex
guessqueue gwynethandtree gymbadges hack
hacked hacker hacking hackinggate
hackingscores hackthectf hallucinations hammeringnails
hamster1 happyarrays harddisk hashcollision
hdb heatwv hedgehogcrimes_easy hello
hellokitty helloworld helloworld2 hiddenarray
highway 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 i_am_steve identifyinggirlfriends idetestevennumbers
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 isitpriming 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 lazy_robot
lazycat lboard lcm lcs
learning leave leenbeetree leftout
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 lookback
lopov losingsleep lostarray lostones
loveletter lowelements loza 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 mathematics mathexam
mathmadness mathtest mathtree matrixrotation
matsuri maxavg maximum maximummonogonosity
maximumtriangle medianheap medianontree medianstring
melons_joig meltylandnightmare mememagic merchant
merchant2 merchant_o mercurypoisoning mergeguessproblem
mergers mergevectors messy mice
midas milkweed mindeque minerals
minimetro minimise minimum mining
minju minstack miracleflover mirrors
missingnumber mobitel modsum modules
modulochain moka molecules moneychanger
moneytree monochromecat mononono monopoly
monsters monsters2 monsters3 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
notduckhunt notebook notimetodry nou
nprime nprime2 ntuc numberbuilding
numberfun numbergame numbers numberspeak
numberspiral numericalstrings nutritionist ny_mathexam
ny_unwind nycheer nycoordinates nylunchtime
nypromo nystudy nytrainer_hard obstacles
obstacletree oddoneout oddqueries omnomnom
omnomnom2 oneforone onlineexam ontheedge
openingshop openingshop0 optimalsubseq optmilk
orangecollector orangeroad oranges2 orchard
orchard2 oridance orz osumnjiceni
outing overthinking packaging packingducks
packingpests padoru paint paint_apio
paint_ioi pairofballs pairs pairs_atcoder
pairsums palindromicfever palindromicfizzbuzz pancake
pancake_ex pandacity pandaeyes pandanumbers
pandaski pandasoldiers panicbutton papaya
parade parade_nyoi parallelogramfest parallelogramisation
parallelogramisation2 parallelogrampairs park partitiongame
party party_noi pascal password
passwords pavement payraise peakfinding
peddler peepeepoopoo pekora penghulu
penguinex penguinfood penguingathering penguinislands
penguinmountain perfectprimes performance perm
permgame permutationgrid permutationswap personalspace
photo photo_nyoi photofinish photograph
physics picnic pigeonhole pigeonnests
pigeons pillars pilot ping
pipes pizzeria placingrouters plagia
planning plantingpotatoes plantingpotatoes2 plasticsimps
platonic platonic2 platonic3 platonic4
platonic5 playlist ples poi
pokeadd pokenumbers poklon police
polyomino ponteng portals postcard
potatoqueue potatosalad potatosqueues potatotree
potionseasy potionshard power powerfulmaxsum
powervillage pplow prefixgcd prefixsums
pressstart prime primeage primefactorization
primepie primesort priorityqueue prisoners
prize problematicjourney problemsetter problemsetter2
procrastination progression progressionspells progressive
promotion psle purplecandy pushups
puttingstrings pythonindentation pythonlist quality
qualityinspections qualitytime queuecutting quillvsowl
rabbitbars rabbitbridges rabbiteatrabbit rabbitjoke
rabbitmeeting rabbitmilk rabbitpainting rabbitplane
rabbitroad rabbittolls race radioactive
railroad railway rainbow rainbowfish
rainbowrabbit rainbowroad rainbowroad_ex rangedeleting
rangerangequery ranges rank raptorinc
rarsum rarwall rating razlika
rblock rbpoints reachability reachability2
reading rebuild reciprocals reciprocate
rect rectangleoutline redblacktree reinforcement
relaymarathon removalcosts removeedges removeelements
reopening repairs replacedigits replacingpavement
republiccity restaurant reverse reverseandmin
reversiblecampaign rhythmscore richzhe riggedroads
rightangtri rmaxq rmq roadsideadverts
roadtrip robberduck robobear robotbombs
robotonring1 robotonring2 robotonring3 robotrotation
robots robots2 rockclimbing rollercoaster
rolling rooms rootedlca roots
rop rotarylock rotate round_up_division
routers routes routine royalguards
rubies runaway runway rushing
sadtrainer sadtrainer2 safety sailor
sale samelength sana sandcity
sandd sardines sawmills scalars
scanner schedule scicom scrivener
sculptures_apio15 seagame sealevel seats2
secret segmenttree segmenttree2 segmenttree3
segmenttreebeats selectingintervals selfdefence selfpermutation
selfstudy sellingpotatoes semiconnected semiexpress
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 show showertheduck
shuffling shuttlerun sightseeing sightseeing2
sillysort simcity simp simplebridges
simplemath2 simpletask singlefile singleflip
skibuddy skiing skillmoves skips
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 sort2 sortbooks
sorting sorting2 sortingtrainers sortingtrainers2
sos spaceinvaders sparsetable 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 subperm subsetmex
subtaskstitching sudoku sudoku2 sufferingprogrammer
sum sumalllis sumint summarising2020
summarising2023 summarising2024 summarizing2021 summit
sumo sumofdigits sumstack sumsumdigit
sunshine superduper supermarket superpiece
supertrees supperbox supplies surnames
swap swapbuildings swapsort swayingflowers
swimming swords synchronization taskmanaging
taxcollection taxes team tears
telephone teleporting tents testing4
thanossort thanossort_st4 thedarknight thief
threetowers threetwentyoneam thumper2 thunderstorm
tickethandling tickets tiles timeexam
tmp toblerone toilettime toll
tomandjerry topical torturingaccountant touchinggrass
tour tourism tourist tourist_noi
tournament towerdefense towers towers_noi
toxic toxic2 train train_ex
traineeline trainorbus trains trains_mco
tralalerolarila 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
uniquenumbers_easy uniquepath unitedcows universe
unluckyfloors unmerge usefft1 vainish
valley variety verticallychallenged veryeasymath
veryeasyproblem videogames village vision
visitinggf visitingsingapore visitor volcanic
voting votingcities vouchers wa2
wabbit wabbitosu wabot walking
wall wallabyhop warp warp2
watching waterbomb waterbottles waterbottles2
waterbottles3 weddingcoins weightedguess werewolf
whackamole whalegroups whaleroles whatisthisactf
whiteboardgame whoatethefries wikipedia winter
wires wiring wiring_ioi wonhee
woodcutter workload workload2 workoutplan
worldend worldline wormholes wronganswer
wrongreverse wv xmas xorb
xortree xuehuapiaopiao yaleuniversity yayornay
yogurt youngmaids youtubealgo yunah
zanesescape zanesgift zanesletters zanespresents
zoo zooqueue