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 deccourse2025
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 duckhunt22 duckhunt23
duckhunt29 duckhunt3 duckhunt37 duckhunt38
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 installingapps_ex
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 kovanice 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 littlejohnny0 littlejohnny1
littlejohnny2 littlejohnny3 littlejohnny4 littlejohnny5
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 monkeyjourney
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 navigation2 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 platonic29 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 quest
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 roadconstruction 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 seats 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 swapgame 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