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Total results2,362 problems

Gahee and Club Audition 1
Easy2
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Welcome Kit
Easy2
Math, Implementation
No attempts yet
Time limit
0.1s
Memory limit
1024 MB
Judgeable
Faucets
Easy2
Implementation, Simulation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
UOSPC Count
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
NOT a SAT problem
Easy2
Implementation, String
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Vote Counting
Easy2
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
The Train at the End of the World
Easy2
Implementation, Geometry
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
X marks the Spot
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Artistic Souvenir
Easy2
Math, Geometry
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Cheese Comparison
Easy2
Sorting
No attempts yet
Time limit
3s
Memory limit
1024 MB
Judgeable
Drum
Easy2
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Knak and the 3D Printer
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Equal Schedules
Easy2
Hash map, Implementation+2
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Big Data vs Information Security vs AI
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Let's Go to Jinju! (Hard)
Easy2
Implementation, String
No attempts yet
Time limit
3s
Memory limit
16 MB
Judgeable
A Choice at the Crossroads
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Haru Dermatology
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Democracy
Easy2
Implementation, String
No attempts yet
Time limit
0.5s
Memory limit
1024 MB
Judgeable
Nine Knights
Easy2
Implementation, Array
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Relocation
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
What Makes 2023 Special?
Easy2
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Dice
Easy2
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Hexadecimal Chaos
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Clever Ines
Easy2
Implementation, String+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Boeing
Easy2
Implementation, Simulation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Clock
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Time
Easy2
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Sign
Easy2
Implementation, String
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Triangles
Easy2
Brute force, Geometry
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Frequency
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Rectangle
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
I Thought of a Number
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Gift
Easy2
Sorting, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Eurokod
Easy2
Sorting, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Number Sequence
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Fakir
Easy2
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Barabashka
Easy2
String, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Water Journal
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
2048 MB
Judgeable
The simplest problem about cubes
Easy2
Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
#TheDress
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Counting Consecutive Ascending Subarrays
Easy2
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
A + B - C
Easy2
Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Cutting Colored Paper
Easy2
Math, Implementation
No attempts yet
Time limit
0.5s
Memory limit
1024 MB
Judgeable
What Kind of Code Is This..
Easy2
String, Implementation
No attempts yet
Time limit
0.5s
Memory limit
1024 MB
Judgeable
No Birch Here~
Easy2
String, String matching+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Ordered Problem Set
Easy2
Implementation, Brute force+1
No attempts yet
Time limit
1s
Memory limit
2048 MB
Judgeable
Rampant Growth
Easy2
Math, Combinatorics
No attempts yet
Time limit
1s
Memory limit
2048 MB
Judgeable
Clock Tower
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Guess the Song from the Intro
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
City and Bitcoin
Easy2
Matrix, Dynamic programming
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Repetition
Easy2
Simulation, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Card Game 2
Easy2
Array, Hash map
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
One bunch of branches
Easy2
Array, Implementation
No attempts yet
Time limit
0.25s
Memory limit
1024 MB
Judgeable
Three Consecutive
Easy2
String, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
International Dates
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Mean Words
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Special School Escape
Easy2
Implementation, String
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Special Cake
Easy2
Brute force, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Special Technology
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Bingo
Easy2
Array, Hash map+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Who Won?
Easy2
Array, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Global Phoenix
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Preliminary Meeting Result Report
Easy2
Implementation, Array
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Catching the Troublemakers
Easy2
Simulation, String
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Irritable Bowel Syndrome
Easy2
Simulation, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Team Name Selection 2
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Vanished Without a Trace
Easy2
Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
SMUPC NAME
Easy2
String, Simulation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Watermelon Game
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Spreading a Virus in K512
Easy2
Array, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Finding the Stop Key
Easy2
Simulation, Bit manipulation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Malatang Tanghulu
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Hyundai Mobis Special Prize 2
Easy2
Brute force, String matching
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Four Vertices of a Cube
Easy2
Implementation, Brute force
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Placing Game Pieces
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
PE Is a Math Subject
Easy2
Math, Implementation
No attempts yet
Time limit
0.5s
Memory limit
1024 MB
Judgeable
Snacks within 300 Yen
Easy2
Greedy, Simulation
No attempts yet
Time limit
8s
Memory limit
1024 MB
Judgeable
Easy as ABC
Easy2
Brute force, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
SUAPC 2024 Winter
Easy2
Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
SWAPC
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
I Want to Go to DIMIGO!
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Snowman
Easy2
Hash map, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Cold Shower
Easy2
Simulation, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Secret of the Sequence (Easy)
Easy2
Array, Simulation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
MEX vs OR
Easy2
Brute force, Bit manipulation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Cool Phone Numbers
Easy2
String, Hash map
No attempts yet
Time limit
5s
Memory limit
1024 MB
Judgeable
Ready for Contest
Easy2
Array, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Dusa and the Yobis
Easy2
Implementation, Simulation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Bronze Count
Easy2
Sorting, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Harvest Waterloo
Easy2
Graph, BFS
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Sejong's Time Travel
Easy2
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Overkill
Easy2
Simulation, Implementation
No attempts yet
Time limit
0.5s
Memory limit
1024 MB
Judgeable
Rhythm Game
Easy2
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Onion Experiment
Easy2
Simulation, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Shotgun
Easy2
Matrix, Brute force+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Magic Compass
Easy2
Brute force, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Hamburger Sort
Easy2
String, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Dartboard
Easy2
Array, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
ANA is a palindrome
Easy2
String, Brute force
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
TPS
Easy2
Simulation, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
Gahee and Club Audition 1Given a key note level and its judgement, compute the score when the judgement differs from the previous one, so a perfect starts a 1-chain.	Easy2	Implementation	No attempts yet	1s	512 MB	Judgeable
Welcome KitFind the fewest T-shirt bundles of size T that cover each size's requests, and the maximum pen bundles of size P with the leftover single pens.	Easy2	MathImplementation	No attempts yet	0.1s	1024 MB	Judgeable
FaucetsEach operation changes one faucet's flow or open state, and the task asks for the total open flow after the start and after every operation.	Easy2	ImplementationSimulation	No attempts yet	2s	1024 MB	Judgeable
UOSPC CountRearrange the letters of S to form as many copies of uospc as possible, and print that maximum count.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
NOT a SAT problemFind a truth assignment that makes the given CNF false, or report NO if every clause contains both a variable and its negation.	Easy2	ImplementationString	No attempts yet	2s	1024 MB	Judgeable
Vote CountingGiven vote counts for several candidates, print each count as tally marks with groups of five drawn as ++++ followed by a space.	Easy2	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
The Train at the End of the WorldGiven N stations joined in a chain by straight tracks, print the coordinates of the lowest point (smallest y) on the railway.	Easy2	ImplementationGeometry	No attempts yet	1s	1024 MB	Judgeable
X marks the SpotFor each string pair, find the position of x or X in S and output the letter at that position in T, uppercased, concatenated in order.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Artistic SouvenirGiven the area of a circle, find the smallest square area that holds the circle with at least a 1 cm margin on every side.	Easy2	MathGeometry	No attempts yet	1s	1024 MB	Judgeable
Cheese ComparisonArrange a set of cheese wheels in order of weight, from smallest to largest, for a market display.	Easy2	Sorting	No attempts yet	3s	1024 MB	Judgeable
DrumGiven hit counts X (left hand) and Y (right hand) per beat, print the order of hits in one beat: 1 for left, 2 for right, 3 for both.	Easy2	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Knak and the 3D PrinterGiven N bar heights of width 1, find the total surface area of the histogram solid, counting the top, bottom, and side faces.	Easy2	ArrayImplementation	No attempts yet	1s	1024 MB	Judgeable
Equal SchedulesGiven two on-call schedules, print how much each teammate's on-call time changed from the first schedule to the second, sorted by name.	Easy2	Hash mapImplementation+2	No attempts yet	1s	1024 MB	Judgeable
Big Data vs Information Security vs AIGiven a string of B, S, and A answers, output the most frequent letter, listing tied letters in B, S, A order or SCU if all three tie.	Easy2	StringImplementation	No attempts yet	1s	512 MB	Judgeable
Let's Go to Jinju! (Hard)Given N transport options with destinations and fares, print the fare to jinju and how many options cost more than that fare.	Easy2	ImplementationString	No attempts yet	3s	16 MB	Judgeable
A Choice at the CrossroadsGiven N miniatures with quality and price, find the two picks under each rule: highest quality (ties by lowest price), and lowest price (ties by highest quality).	Easy2	ArrayImplementation	No attempts yet	1s	512 MB	Judgeable
Haru DermatologyGiven a quadratic f(x) and a line g(x), compute the integral of f(x) minus g(x) from x1 to x2, which is an integer.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
DemocracyCount the candidates that get more than half of the M votes in favor, where each candidate's votes are given as a string of O and X.	Easy2	ImplementationString	No attempts yet	0.5s	1024 MB	Judgeable
Nine KnightsChecks whether a 5 by 5 board holds exactly nine knights with no two knights a knight's move apart.	Easy2	ImplementationArray	No attempts yet	1s	1024 MB	Judgeable
RelocationEach company has a coordinate that can be updated, and each query asks for the absolute difference between two companies' coordinates.	Easy2	ArrayImplementation	No attempts yet	1s	1024 MB	Judgeable
What Makes 2023 Special?Given a four-digit year N that is not a multiple of 100, check whether N+1 is divisible by the last two digits of N.	Easy2	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
DiceGiven n dice with f faces and a modifier m, decide whether a reported total S is reachable by checking if S minus m lies between n and n times f.	Easy2	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
Hexadecimal ChaosGiven a shortened IPv6 address, expand it to the full notation of 8 groups of 4 hexadecimal digits separated by colons.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Clever InesReverse a column-by-column reading of an r x s grid (r at most s, r*s = n, r as large as possible) to recover the original message.	Easy2	ImplementationString+1	No attempts yet	1s	1024 MB	Judgeable
BoeingGiven the number of sold tickets and the reserved staff seat, find the first free seat when seats fill in numbering order on the Boeing layout.	Easy2	ImplementationSimulation	No attempts yet	1s	1024 MB	Judgeable
ClockGiven a clock time h and m, find the first moment the hour hand lands on the minute hand's mark, then print that clock time and the elapsed time.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
TimeGiven the departure and arrival times of three cars, find the shortest and longest trip durations and print them as hh:mm.	Easy2	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
SignGiven three prices, print the sign text in input order, writing a shared digit once with an apostrophe when one price ends in the digit the next price starts with.	Easy2	ImplementationString	No attempts yet	1s	1024 MB	Judgeable
TrianglesGiven N named points with integer coordinates, list every triple of points that is not collinear, with the names in input order.	Easy2	Brute forceGeometry	No attempts yet	1s	1024 MB	Judgeable
FrequencyCount how often each Latin letter appears, ignoring case, in text that ends with @, and print a vertical bar chart with the letters A to Z along the bottom.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
RectangleGiven a rectangle's perimeter in meters and centimeters and the centimeter difference d between its sides, output the two side lengths.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
I Thought of a NumberGiven a and b, find the starting number that becomes b after dividing by a, subtracting a, and repeating those two steps once more.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
GiftReads three uppercase letters and three digits, then prints the password with letters in ascending order and digits in descending order, alternating letter and digit.	Easy2	SortingImplementation	No attempts yet	1s	1024 MB	Judgeable
EurokodGiven the president's ranking and each code's member vote count, print the codes by summed points in descending order, breaking ties by member votes.	Easy2	SortingImplementation	No attempts yet	1s	1024 MB	Judgeable
Number SequenceGiven a sequence of 1, 2, 4, and 8, find the longest run of equal adjacent values and count the windows of four consecutive elements that contain all four values.	Easy2	ArrayImplementation	No attempts yet	1s	1024 MB	Judgeable
FakirGiven the counts of gray, white, black, and spotted mice, find the fewest draws that guarantee at least one mouse of each color.	Easy2	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
BarabashkaGiven five card descriptions, print the color and name of the item to grab for each card by checking which items and colors the sentence mentions.	Easy2	StringImplementation	No attempts yet	2s	1024 MB	Judgeable
Water JournalGiven n-1 logged daily water amounts and the true minimum a and maximum b, list every value the missing day could have, or -1 if none fits.	Easy2	ArrayImplementation	No attempts yet	1s	2048 MB	Judgeable
The simplest problem about cubesGiven the colors and numbers on three visible faces of a cube, list every collector whose criteria allow that cube.	Easy2	Implementation	No attempts yet	2s	1024 MB	Judgeable
#TheDressFor each survey answer, checks whether it contains the word pair blue and black, white and gold, or neither, then prints the three population percentages.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Counting Consecutive Ascending SubarraysGiven a permutation A of length N, count the pairs (i, j) with i at most j where A_i through A_j are strictly increasing.	Easy2	ArrayImplementation	No attempts yet	1s	1024 MB	Judgeable
A + B - CGiven integers A, B, and C, print A+B-C once with them as numbers and once with them as JavaScript strings.	Easy2	Implementation	No attempts yet	1s	1024 MB	Judgeable
Cutting Colored PaperGiven the area W of one half of a square sheet cut along its width, print the perimeter of the original square.	Easy2	MathImplementation	No attempts yet	0.5s	1024 MB	Judgeable
What Kind of Code Is This..Given a string with at most two double quotes, print the text between the quotes if it is a valid quoted string, or print CE otherwise.	Easy2	StringImplementation	No attempts yet	0.5s	1024 MB	Judgeable
No Birch Here~Given N item names with quantities, sum the quantities of every item whose name contains the substring S.	Easy2	StringString matching+1	No attempts yet	1s	1024 MB	Judgeable
Ordered Problem SetGiven n distinct difficulties in contest order, list each divisor k greater than 1 of n where every block of n/k consecutive problems is easier than the next block.	Easy2	ImplementationBrute force+1	No attempts yet	1s	2048 MB	Judgeable
Rampant GrowthCount the ways to place exactly one plant per column in an r by c grid so that plants in adjacent columns sit in different rows, modulo 998244353.	Easy2	MathCombinatorics	No attempts yet	1s	2048 MB	Judgeable
Clock TowerGiven the minute M that the altered minute hand points to, find the true minute and print it with one decimal place.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Guess the Song from the IntroGiven stored songs with their first seven notes, for each query of three notes, print the unique song title starting with those notes, ? if several match, or ! if none.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
City and BitcoinDetermines whether a path exists from the top-left to the bottom-right of a grid using only right and down moves through open cells.	Easy2	MatrixDynamic programming	No attempts yet	1s	512 MB	Judgeable
RepetitionStarting from X, apply the mod-3 rule (add 1, double, or triple) and count steps until the value reaches at least N.	Easy2	SimulationImplementation	No attempts yet	2s	1024 MB	Judgeable
Card Game 2Given N card values, determine whether some integer x exists such that cards with values x, x+3, and x+6 all appear.	Easy2	ArrayHash map	No attempts yet	2s	1024 MB	Judgeable
One bunch of branchesGiven the colors of a 10x10 grid of branches, decide whether any full row or column is one single color.	Easy2	ArrayImplementation	No attempts yet	0.25s	1024 MB	Judgeable
Three ConsecutiveGiven a string of 'o' and 'x' characters, the task is to check whether three 'o' characters appear consecutively.	Easy2	StringImplementation	No attempts yet	2s	1024 MB	Judgeable
International DatesGiven a date written as AA/BB/CCCC, decide whether it must be US format (MM/DD), must be European format (DD/MM), or could be either.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Mean WordsGiven N words, build one word by taking the floor of the average ASCII value at each position across the words that reach that position.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Special School EscapeGiven N teacher patrol strings over M periods, find the earliest period when no teacher patrols, or report ESCAPE FAILED if none exists.	Easy2	ImplementationString	No attempts yet	1s	1024 MB	Judgeable
Special CakeGiven N students' statements about who ate the cake, print every student who could be the culprit without contradicting any statement, or print swi if none can be.	Easy2	Brute forceImplementation	No attempts yet	1s	1024 MB	Judgeable
Special TechnologyGiven student heights, find the greatest final height reachable when each student is hit at most once, printed modulo 10^9+7.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
BingoGiven bingo boards and a drawn sequence, list the players who have a full row, column, or diagonal marked after m draws, in input order.	Easy2	ArrayHash map+1	No attempts yet	1s	1024 MB	Judgeable
Who Won?Given two sets of 18 problem scores, decide who ranks higher by total, then by the count of 10s, 9s, and so on, or report a tie.	Easy2	ArrayImplementation	No attempts yet	2s	1024 MB	Judgeable
Global PhoenixGiven three strings, check whether they can be ordered so that they start with l, k, and p respectively, and print GLOBAL or PONIX.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Preliminary Meeting Result ReportCount the teams that solved at least one of three problems, where each solve time is no earlier than the solve time of any lower-numbered problem.	Easy2	ImplementationArray	No attempts yet	1s	1024 MB	Judgeable
Catching the TroublemakersFor each member's solve record over M days, find the longest run of days without a solve, then count how many distinct longest-run values there are.	Easy2	SimulationString	No attempts yet	1s	1024 MB	Judgeable
Irritable Bowel SyndromeGiven daily stress changes where positive values add stress and negative values relieve it down to 0, count the days the accumulated stress is at least M.	Easy2	SimulationImplementation	No attempts yet	2s	1024 MB	Judgeable
Team Name Selection 2Given N candidate team names, print the one that has at most 10 characters, no more uppercase than lowercase letters, and at least one non-digit character.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Vanished Without a TraceGiven arrays A and B of N integers each (N up to 9), print the smaller of X and Y, or the shared value if they are equal. The statement never defines X or Y.	Easy2	Implementation	No attempts yet	1s	1024 MB	Judgeable
SMUPC NAMEGiven a registration number and a lowercase name, the task builds a SMUPC NAME by deduplicating letters, appending a count, prepending a number, and reversing the result.	Easy2	StringSimulation+1	No attempts yet	1s	512 MB	Judgeable
Watermelon GameGiven N and K cherries, find how many level N watermelons can be made by merging two equal-level fruits into the next level.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Spreading a Virus in K512Process infect and cure queries on N computers, and print how many computers are uninfected for each count query.	Easy2	ArrayImplementation	No attempts yet	2s	512 MB	Judgeable
Finding the Stop KeyGiven a sequence of commands that swap pairs of 8 keys (invalid commands are skipped), find the final point index of the stop key.	Easy2	SimulationBit manipulation	No attempts yet	1s	1024 MB	Judgeable
Malatang TanghuluGiven skewers with strawberry and grape counts and fixed insert amounts P and Q, decide whether every skewer can be balanced and print the insert counts.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Hyundai Mobis Special Prize 2Count how many times the word MOBIS can be read in an N by N letter grid, starting from any cell and moving in one of 8 directions.	Easy2	Brute forceString matching	No attempts yet	1s	1024 MB	Judgeable
Four Vertices of a CubeGiven T test cases of four distinct indices of a unit cube's vertices, determine whether each set of four points lies on a single face of the cube.	Easy2	ImplementationBrute force	No attempts yet	1s	1024 MB	Judgeable
Placing Game PiecesGiven a board N cells wide and M cells tall, count the unordered pairs of cells that touch each other diagonally.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
PE Is a Math SubjectGiven the two side lengths of a rectangular playground in meters, print the radius in centimeters of the largest circle that fits inside it.	Easy2	MathImplementation	No attempts yet	0.5s	1024 MB	Judgeable
Snacks within 300 YenGreedy George walks a shelf of snack prices left to right and buys each snack that keeps his total within 300 yen. The task is to output his total spending for each dataset.	Easy2	GreedySimulation	No attempts yet	8s	1024 MB	Judgeable
Easy as ABCFind the lexicographically smallest 3-letter word spelled by three distinct cells in a 3x3 grid of A, B, and C, where each consecutive pair of cells is adjacent.	Easy2	Brute forceImplementation	No attempts yet	2s	1024 MB	Judgeable
SUAPC 2024 WinterGiven N, print how many problems the team ranked Nth on the SUAPC 2024 Winter scoreboard solved, followed by their problem letters in lexicographic order.	Easy2	Implementation	No attempts yet	1s	1024 MB	Judgeable
SWAPCGiven a string, pair the i-th P with the i-th C in order, swap the two characters in each pair, and print the resulting string.	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
I Want to Go to DIMIGO!Given a page range from A to B, find the fewest photos, where one photo can capture a single page or an open spread of pages 2k-1 and 2k.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
SnowmanGiven two rankings of the same players, find the bib numbers that rose the most places, listed in their final rank order.	Easy2	Hash mapImplementation	No attempts yet	1s	1024 MB	Judgeable
Cold ShowerSimulate the shower temperature for n seconds under the given update rule and sum the distances between each temperature and the comfortable temperature k.	Easy2	SimulationImplementation	No attempts yet	1s	1024 MB	Judgeable
Secret of the Sequence (Easy)Given n, p, q, r, s, and a_1, the task is to compute the sum of the first n terms of a sequence defined by a_(2i) = pa_i + q and a_(2i+1) = ra_i + s.	Easy2	ArraySimulation	No attempts yet	1s	1024 MB	Judgeable
MEX vs ORGiven l, r, and x, the task is to compute the mex of the values (i OR x) for every i from l to r inclusive.	Easy2	Brute forceBit manipulation	No attempts yet	2s	1024 MB	Judgeable
Cool Phone NumbersGiven a US phone number in ddd-ddd-dddd format, count how many distinct digits it contains.	Easy2	StringHash map	No attempts yet	5s	1024 MB	Judgeable
Ready for ContestGiven solutions written per problem and language, list the problems that have both a C++ solution and a Java solution, in increasing order.	Easy2	ArrayImplementation	No attempts yet	2s	1024 MB	Judgeable
Dusa and the YobisDusa starts at size D and eats each Yobi smaller than itself, gaining that Yobi's size. Find Dusa's size when it first meets a Yobi that is not smaller.	Easy2	ImplementationSimulation	No attempts yet	1s	1024 MB	Judgeable
Bronze CountGiven N participant scores, find the third-highest distinct score and how many participants received that score.	Easy2	SortingImplementation	No attempts yet	1s	1024 MB	Judgeable
Harvest WaterlooGiven a grid of pumpkins and hay bales, the task sums the values of all pumpkins reachable by orthogonal moves from a start cell.	Easy2	GraphBFS	No attempts yet	1s	1024 MB	Judgeable
Sejong's Time TravelGiven the current date and location and a target date and location, print the coordinates to enter, since the machine moves opposite to each entered change.	Easy2	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
OverkillCount the turns needed to kill all monsters when each turn deals D damage and passes p percent of any overkill to the next monster.	Easy2	SimulationImplementation	No attempts yet	0.5s	1024 MB	Judgeable
Rhythm GameGiven N measures with BPM changes at certain measures, compute the song's total play time in seconds, where each measure has 4 beats.	Easy2	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Onion ExperimentSimulate N days of two onions: praise adds A, criticism adds B, roles swap when the criticized onion is longer, and a tie cuts it by 1. Print both lengths.	Easy2	SimulationImplementation	No attempts yet	1s	1024 MB	Judgeable
ShotgunGiven a 4-row keyboard grid and 9 typed characters, find the center key whose 3x3 neighborhood contains exactly those characters.	Easy2	MatrixBrute force+1	No attempts yet	1s	1024 MB	Judgeable
Magic CompassGiven M compass readings that each give the direction from a cell to a hidden treasure on an N x N grid, find the treasure's cell.	Easy2	Brute forceImplementation	No attempts yet	1s	1024 MB	Judgeable
Hamburger SortGiven a length-3 string holding (, 1, and ) once each, find the fewest moves that place one character next to another to form (1).	Easy2	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
DartboardGiven 20 dartboard scores in circular order, print whichever of Alice (aims at 20 and its two neighbors) or Bob (averages all sectors) has the higher expected score, or Tie.	Easy2	ArrayMath	No attempts yet	1s	1024 MB	Judgeable
ANA is a palindromeCount the substrings of S that start and end with A, contain exactly one N, and have no other A.	Easy2	StringBrute force	No attempts yet	1s	1024 MB	Judgeable
TPSSimulate W, A, S, D moves and 90-degree camera rotations around the protagonist, printing both positions after each input.	Easy2	SimulationImplementation	No attempts yet	1s	1024 MB	Judgeable