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Total results2,362 problems

In the Shower
Easy1
Array
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
IT Passport Examination Grading
Easy1
Implementation
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Thai Lottery Prize Check
Easy1
String, Implementation
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Logical Functions: AND and OR
Easy1
Simulation, Implementation
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Cryptographer's Conundrum
Easy1
String, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Hangul Syllables
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
The Tallest Student
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Pedometer Distance
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Count Me In
Easy1
String, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Covering an equilateral triangle
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Polynomial Boundaries
Easy1
Math
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
!terces poT
Easy1
String
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Report Card Time
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Little Jeongmin
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
The Image Stretched Twice as Wide
Easy1
Implementation, String
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Concatenate two lines
Easy1
String
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
And Then There Was 5
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Three Kinds of Sums
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Lining Up by Name
Easy1
String, Array
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Identifying tea
Easy1
Implementation
No attempts yet
Time limit
3s
Memory limit
256 MB
Judgeable
Yangjojang of The Year
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Affine Cipher
Easy1
Implementation, String+1
No attempts yet
Time limit
5s
Memory limit
256 MB
Judgeable
The Princess and the Magic Mirror
Easy1
Matrix, Implementation
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Popularity Vote
Easy1
Implementation, Array
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Persistence
Easy1
Simulation, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
ASCII Code
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
ROT13
Easy1
String, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Box intersection volume
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Print the input as is
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Echo the Input 2
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Sum of digits
Easy1
Implementation, String
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Print ten characters per line
Easy1
String, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Essay
Easy1
Implementation, String
No attempts yet
Time limit
1s
Memory limit
64 MB
Judgeable
Tawla
Easy1
Implementation
No attempts yet
Time limit
3s
Memory limit
256 MB
Judgeable
Cards
Easy1
Array
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
Reading numbers in 0.1 seconds
Easy1
Implementation
No attempts yet
Time limit
0.1s
Memory limit
512 MB
Judgeable
Valentine's Day
Easy1
Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Korea University is love
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
Moving Fruit
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
NN
Easy1
Implementation, String
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
Hot fish-shaped bun
Easy1
Matrix, Implementation
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
Choosing subjects
Easy1
Greedy, Sorting
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Power of Two
Easy1
Bit manipulation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Fence Painting
Easy1
Intervals, Math
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
First Submission
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Last submission
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Midpoint Submission
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Evolving Eevee
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Pokemon GO Evolution
Easy1
Array, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
MD5 score
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
The slowest sudoku
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
1 and 2
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Nunchi game
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Magic Trick
Easy1
Array, Implementation
No attempts yet
Time limit
5s
Memory limit
512 MB
Judgeable
Rulers of Centauri Prime
Easy1
String, Implementation
No attempts yet
Time limit
5s
Memory limit
512 MB
Judgeable
Rulers of Centauri Prime
Easy1
String, Implementation
No attempts yet
Time limit
5s
Memory limit
512 MB
Judgeable
KBO Korean Series Champion Number
Easy1
Implementation, String+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
HicCup
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
32 MB
Judgeable
George Boole
Easy1
Implementation, String+2
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Hands are faster than computers
Easy1
Implementation, Graph
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Will floats still pass?
Easy1
Implementation, Geometry
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
A debugging life that starts with std::sort
Easy1
Implementation, Sorting+2
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Is Dinic quartic?
Easy1
Graph, Implementation+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Hamming Distance
Easy1
Implementation, Array
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Java2016
Easy1
Implementation, Simulation+2
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
The Merchant of Venice
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Grass Seed Inc.
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Handball
Easy1
Array, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Zero or One
Easy1
Implementation, Brute force
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Histogram
Easy1
Implementation, String
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Pepero Day
Easy1
Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Equality Check
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Tournament Selection
Easy1
Implementation, String
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Helicopter
Easy1
Implementation, String
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
A toast that wins over the room
Easy1
Implementation, String+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Tuna
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
64 MB
Judgeable
Prime Submission Number
Easy1
Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Two Chickens (...)
Easy1
Implementation, Math+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
The Y Bus Goes Vroom
Easy1
Simulation, Implementation+1
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Pick the Quadrant
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Shifty Sum
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Polynomial Derivative (Small)
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
128 MB
Judgeable
FizzBuzz
Easy1
Implementation, Math+2
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Counting positive integers
Easy1
Implementation, Array
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Addition
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
CAPS
Easy1
String, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Judging Moose
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Hard choice
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Every Second Counts
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Angles
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Rectangles
Easy1
Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Final Score
Easy1
Hash map, Implementation+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Chanukah Candles
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Sim Card
Easy1
Implementation, Brute force+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Vera's Fashion
Easy1
Math, Combinatorics+1
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Fast A+B
Easy1
Implementation, Math+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Sum of N integers
Easy1
Implementation, Math
No attempts yet
Time limit
0.1s
Memory limit
512 MB
Judgeable
Linear Algebra and Group
Easy1
Implementation, Math+2
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
SUPER SUPER BINARY SEARCH DELUXE 2.5: THE LEGEND OF THE GOLDEN MAZASSUMNIDA, EPISODE 2: THE MAZWAETL UNIVERSE, PART 2: THE PARALLEL UNIVERSE AND THE LOST MAZASSUMNIDA: GAME OF THE YEAR EDITION
Easy1
Binary search, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Yee
Easy1
Implementation, Brute force
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
In the ShowerCount, for each test case, how many of the N bottles need more than E attempts and are empty.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
IT Passport Examination GradingAdd each applicant's three field scores and mark PASS only when the total reaches 55 and every field meets its 30 percent cutoff.	Easy1	Implementation	No attempts yet	2s	256 MB	Judgeable
Thai Lottery Prize CheckGiven the winning numbers and prize amounts for six Thai lottery categories, compute the total prize for each ticket by adding every matched category.	Easy1	StringImplementation	No attempts yet	2s	256 MB	Judgeable
Logical Functions: AND and ORCheck each submitted weight and bias by testing all four binary inputs and report whether the neuron matches the requested AND or OR gate.	Easy1	SimulationImplementation	No attempts yet	2s	256 MB	Judgeable
Cryptographer's ConundrumCount the positions where the given string differs from PER repeated to the same length.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Hangul SyllablesGiven N between 1 and 11172, print the N-th Hangul syllable in initial, medial, then final order.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
The Tallest StudentPrint the name of the tallest student in each test case, listing every tied name in input order.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Pedometer DistanceMultiply each step count by the stride length and print each distance in kilometres with five decimals.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
Count Me InCount the vowels and consonants in each of up to 100 given English sentences.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Covering an equilateral triangleCover an equilateral triangle of side A with the smallest possible number of side-B equilateral triangles, which is (A/B) squared.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Polynomial BoundariesGiven polynomial coefficients and a point (x, y), evaluate the polynomial at x and report whether y lies below, on, or above its value.	Easy1	Math	No attempts yet	2s	256 MB	Judgeable
!terces poTReverse every input line except the final END line and print each decoded sentence in order.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
Report Card TimeConvert each hobbit's numeric score to a letter grade using the given scale and print the results in input order.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Little JeongminAdd three given integers up to 10^12 and print their sum.	Easy1	Math	No attempts yet	1s	512 MB	Judgeable
The Image Stretched Twice as WideCheck whether doubling every character of the first picture sideways produces the second picture.	Easy1	ImplementationString	No attempts yet	1s	512 MB	Judgeable
Concatenate two linesRead two input lines and print their concatenation with nothing inserted between them.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
And Then There Was 5For each query offset into pi and target digit, you print the next matching digit and the 5 after it.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Three Kinds of SumsFor each data set with N, print the sums of the first N positive integers, the first N odd integers, and the first N even integers.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Lining Up by NameCheck whether the given player names stand in increasing or decreasing dictionary order and print INCREASING, DECREASING, or NEITHER.	Easy1	StringArray	No attempts yet	1s	256 MB	Judgeable
Identifying teaCount how many of the five contestants guessed the given tea type correctly.	Easy1	Implementation	No attempts yet	3s	256 MB	Judgeable
Yangjojang of The YearFor each test case, print the name of the school with the largest alcohol amount.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Affine CipherApply E(X) = (aX + b) mod 26 to each uppercase letter of the plaintext and print the ciphertext.	Easy1	ImplementationString+1	No attempts yet	5s	256 MB	Judgeable
The Princess and the Magic MirrorPrint an N by N picture unchanged, mirrored left to right, or flipped top to bottom according to the given mood number.	Easy1	MatrixImplementation	No attempts yet	2s	256 MB	Judgeable
Popularity VoteFor each poll, find the candidate with the most votes and report whether the top count is a majority, a minority, or tied.	Easy1	ImplementationArray	No attempts yet	2s	256 MB	Judgeable
PersistenceCount how many times multiplying the decimal digits together reduces the given number to a single digit.	Easy1	SimulationImplementation	No attempts yet	1s	256 MB	Judgeable
ASCII CodePrint the ASCII code of the given letter or digit.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
ROT13Encrypt the given string with ROT13, shifting each English letter by 13 places and leaving other characters unchanged.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Box intersection volumeCompute the volume shared by N axis-aligned boxes by intersecting their x, y, and z ranges.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Print the input as isRead all input lines and print them unchanged in the same order.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Echo the Input 2Print every input line unchanged, preserving blank lines and leading and trailing spaces.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Sum of digitsAdd N digits given as a single unspaced line and print their sum.	Easy1	ImplementationString	No attempts yet	1s	256 MB	Judgeable
Print ten characters per linePrint the given word in chunks of ten characters, one chunk per line.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
EssayPrint B distinct words formed by mapping the decimal digits of 0 to B-1 to letters a to j.	Easy1	ImplementationString	No attempts yet	1s	64 MB	Judgeable
TawlaFor each pair of dice rolls, print the combined nickname with the larger value first, using special names for doubles and for 5 and 6.	Easy1	Implementation	No attempts yet	3s	256 MB	Judgeable
CardsTwo cards are compared at a time with the smaller pocketed, so find the largest possible sum of pocketed numbers for the given row.	Easy1	Array	No attempts yet	1s	32 MB	Judgeable
Reading numbers in 0.1 secondsRead up to five million natural numbers within 0.1 seconds and print how many were read and their sum.	Easy1	Implementation	No attempts yet	0.1s	512 MB	Judgeable
Valentine's DayIgnore any input and print nothing to standard output.	Easy1	Implementation	No attempts yet	2s	512 MB	Judgeable
Korea University is lovePrint the fixed Korean string 고려대학교 on one line with no input.	Easy1	Implementation	No attempts yet	1s	32 MB	Judgeable
Moving FruitCompute the fewest single-fruit moves between two baskets so one holds only apples and the other holds only oranges.	Easy1	Math	No attempts yet	1s	32 MB	Judgeable
NNRepeat the decimal form of N exactly N times and print at most its first M characters.	Easy1	ImplementationString	No attempts yet	1s	32 MB	Judgeable
Hot fish-shaped bunPrint the given N by M binary picture mirrored left to right.	Easy1	MatrixImplementation	No attempts yet	1s	32 MB	Judgeable
Choosing subjectsPick the three highest scores among the four science subjects and the higher of history and geography, then print their sum.	Easy1	GreedySorting	No attempts yet	2s	512 MB	Judgeable
Power of TwoPrint 1 if the given natural number N is a power of two and 0 otherwise.	Easy1	Bit manipulation	No attempts yet	2s	512 MB	Judgeable
Fence PaintingCompute the total painted length covered by two given intervals on a number line.	Easy1	IntervalsMath	No attempts yet	2s	512 MB	Judgeable
First SubmissionIgnore any input and print nothing except optional spaces or line breaks.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Last submissionSubmit a program that ignores any input and produces no output.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Midpoint SubmissionIgnore any input and print nothing, since the empty output is the required answer.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Evolving EeveePrint Flareon, the alphabetically first of the three evolution names, regardless of the given level.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Pokemon GO EvolutionGiven a Pokemon number from 1 to 151, print its evolution candy cost from the table, or -1 when it does not evolve.	Easy1	ArrayImplementation	No attempts yet	1s	512 MB	Judgeable
MD5 scoreConcatenate S, #, and P, hash the result with MD5, and print the sum of the hex digits.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
The slowest sudokuPrint the given nine by nine Sudoku grid exactly, using zeros for empty cells.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
1 and 2Print 1 without reading input, as the fixed answer is the smaller allowed number.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Nunchi gamePrint the largest allowed integer, 100000, since there is no input and the score equals the printed number.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Magic TrickFind the card shared by the chosen rows of two 4 by 4 layouts, or report a bad layout or cheating.	Easy1	ArrayImplementation	No attempts yet	5s	512 MB	Judgeable
Rulers of Centauri PrimeGiven T country names, report for each whether a king, a queen, or nobody rules it from its last letter.	Easy1	StringImplementation	No attempts yet	5s	512 MB	Judgeable
Rulers of Centauri PrimeGiven T country names, print for each whether its last letter marks a king, a queen, or nobody.	Easy1	StringImplementation	No attempts yet	5s	512 MB	Judgeable
KBO Korean Series Champion NumberGiven the Korean name of a KBO team that won the Korean Series, print the number assigned to that team.	Easy1	ImplementationString+1	No attempts yet	2s	512 MB	Judgeable
HicCupGiven N, add 10N, 10N+10, and 20N+20, then print the total.	Easy1	MathImplementation	No attempts yet	1s	32 MB	Judgeable
George BooleRead one boolean operation in the form true AND false and print its result.	Easy1	ImplementationString+2	No attempts yet	2s	512 MB	Judgeable
Hands are faster than computersPrint a fixed 4-vertex, 5-edge graph and a fixed proper 4-coloring, with no input to read.	Easy1	ImplementationGraph	No attempts yet	2s	512 MB	Judgeable
Will floats still pass?Print a fixed two-point set, (0, 0) and (1, 1), with no input; the answer is a constant output.	Easy1	ImplementationGeometry	No attempts yet	2s	512 MB	Judgeable
A debugging life that starts with std::sortPrint N = 2 and the two points (1, 0) and (0, 1), a fixed counterexample for a broken comparator in std::sort.	Easy1	ImplementationSorting+2	No attempts yet	2s	512 MB	Judgeable
Is Dinic quartic?Print a fixed 4-vertex, 5-edge flow network with the exact edges and capacities given in the statement.	Easy1	GraphImplementation+1	No attempts yet	2s	512 MB	Judgeable
Hamming DistanceRead two n-dimensional integer vectors and count the positions where their entries differ.	Easy1	ImplementationArray	No attempts yet	1s	256 MB	Judgeable
Java2016Given a target constant c, print 20 fixed macro definitions and then build one expression by appending a macro for each set bit of c.	Easy1	ImplementationSimulation+2	No attempts yet	2s	512 MB	Judgeable
The Merchant of VeniceSum the cargo values of all ships whose distance is at most s*d, the distance they can cover by the due date.	Easy1	ImplementationMath	No attempts yet	2s	512 MB	Judgeable
Grass Seed Inc.Given the cost per square metre and a list of rectangular lawns, print the total cost of seeding all of them, rounded to seven decimals.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
HandballGiven each player's goal counts across M matches, count how many players scored at least once in every match.	Easy1	ArrayImplementation	No attempts yet	2s	512 MB	Judgeable
Zero or OneGiven three bits picked by three players, print the player whose bit differs from the other two, or * if there is no such player.	Easy1	ImplementationBrute force	No attempts yet	1s	512 MB	Judgeable
HistogramRead n bar sizes and print one line of exactly k equals signs for each bar size k.	Easy1	ImplementationString	No attempts yet	2s	512 MB	Judgeable
Pepero DayIgnore the input and print the exact Korean string 빼빼로 데이 on one line.	Easy1	Implementation	No attempts yet	2s	512 MB	Judgeable
Equality CheckRead a quiz line formatted as 'a + b = c' and print YES if a + b equals c, otherwise NO.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Tournament SelectionCount wins among six game results and print the group number 1, 2, or 3, or -1 if there are no wins.	Easy1	ImplementationString	No attempts yet	2s	512 MB	Judgeable
HelicopterPrint the given ASCII art helicopter exactly as shown, with no trailing spaces on any line.	Easy1	ImplementationString	No attempts yet	1s	512 MB	Judgeable
A toast that wins over the roomGiven one of eight fixed Hangul abbreviations joined by periods, print the full Korean toast phrase it stands for.	Easy1	ImplementationString+1	No attempts yet	2s	512 MB	Judgeable
TunaFor each tuna, take the larger of two estimates when they differ by at most X, otherwise take a third estimate, and print the sum.	Easy1	ImplementationMath	No attempts yet	1s	64 MB	Judgeable
Prime Submission NumberA joke problem with no input and no output: the only accepted submission prints nothing.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Two Chickens (...)Given two account balances and the price of one chicken, print the leftover total if two chickens can be afforded, otherwise the current total.	Easy1	ImplementationMath+1	No attempts yet	2s	512 MB	Judgeable
The Y Bus Goes VroomSimulate the passenger count as a bus travels N stops with given boarding and alighting numbers, then print the driver's fixed name.	Easy1	SimulationImplementation+1	No attempts yet	2s	256 MB	Judgeable
Pick the QuadrantRead the x and y coordinates of a nonzero point and print which of the four quadrants it lies in.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Shifty SumGiven N and k, print N + 10N + ... + 10^k N.	Easy1	MathImplementation	No attempts yet	1s	512 MB	Judgeable
Polynomial Derivative (Small)Given the nonzero terms of a polynomial, compute the value of its derivative at x = 1.	Easy1	MathImplementation+1	No attempts yet	1s	128 MB	Judgeable
FizzBuzzPrint the numbers 1 through N, writing Fizz for multiples of X, Buzz for multiples of Y, and FizzBuzz for multiples of both.	Easy1	ImplementationMath+2	No attempts yet	1s	512 MB	Judgeable
Counting positive integersGiven a list of integers, count how many are strictly greater than zero and print the count.	Easy1	ImplementationArray	No attempts yet	2s	512 MB	Judgeable
AdditionRead two integers between -100,000 and 100,000 and print their sum.	Easy1	MathImplementation	No attempts yet	1s	512 MB	Judgeable
CAPSRead a lowercase string and print every character converted to uppercase.	Easy1	StringImplementation	No attempts yet	2s	512 MB	Judgeable
Judging MooseGiven the tine counts on each side, print the moose's score as Even x, Odd x, or Not a moose when both sides are zero.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Hard choiceGiven prepared and requested counts for chicken, beef, and pasta, count passengers whose requested meal is unavailable.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Every Second CountsGiven a start and end clock time, compute how many seconds elapsed, adding 24 hours if the ride crosses midnight.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
AnglesFor each triple of angles, print the numbers and say whether they sum to 180.	Easy1	ImplementationMath	No attempts yet	2s	512 MB	Judgeable
RectanglesRead R and C, then print R lines of C asterisks each to draw a rectangle.	Easy1	Implementation	No attempts yet	2s	512 MB	Judgeable
Final ScoreGiven the rosters of two teams and the names of the goal scorers, count each team's goals and decide which team scored more.	Easy1	Hash mapImplementation+1	No attempts yet	2s	512 MB	Judgeable
Chanukah CandlesEach evening needs one more candle than the last plus one shammas, so for N days compute N(N+1)/2 + N.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
Sim CardFor each student, compute the smallest total cost of call minutes and data across the three fixed operator price plans.	Easy1	ImplementationBrute force+1	No attempts yet	2s	512 MB	Judgeable
Vera's FashionGiven N tops and N bottoms colored 1 to N, count how many top and bottom pairs have different colors.	Easy1	MathCombinatorics+1	No attempts yet	2s	256 MB	Judgeable
Fast A+BRead T pairs of integers from fast input and print each sum on its own line.	Easy1	ImplementationMath+1	No attempts yet	1s	512 MB	Judgeable
Sum of N integersRead N integers and print their sum, which needs a 64-bit integer type.	Easy1	ImplementationMath	No attempts yet	0.1s	512 MB	Judgeable
Linear Algebra and GroupOutput the sum of the digits appearing in the cover illustration of a specific linear algebra textbook.	Easy1	ImplementationMath+2	No attempts yet	1s	256 MB	Judgeable
SUPER SUPER BINARY SEARCH DELUXE 2.5: THE LEGEND OF THE GOLDEN MAZASSUMNIDA, EPISODE 2: THE MAZWAETL UNIVERSE, PART 2: THE PARALLEL UNIVERSE AND THE LOST MAZASSUMNIDA: GAME OF THE YEAR EDITIONPrint the first midpoint binary search picks on [1, 100], which is 50.	Easy1	Binary searchImplementation	No attempts yet	1s	256 MB	Judgeable
YeeRead any amount of input, including none, and print the single word Yee.	Easy1	ImplementationBrute force	No attempts yet	2s	512 MB	Judgeable