Problems

Pick a problem and write your solution in the built-in editor. The judge runs it against real test cases while you watch, and the wider archive is open to read whenever you like.

This page is still under construction.

Parts of this page are still being built. What you see may change.

Total results21,054 problems

Yonsei UniversityEasy1
ImplementationNo attempts yetTime limit1sMemory limit128 MB
Judgeable
RectangleEasy1
Implementation, Math +2No attempts yetTime limit1sMemory limit512 MB
Judgeable
The group project starts and the team leader is goneEasy1
Math, Implementation +1No attempts yetTime limit1sMemory limit128 MB
Judgeable
Who Am IEasy1
ImplementationNo attempts yetTime limit1sMemory limit128 MB
Judgeable
Helmet and VestEasy1
Array, Implementation +2No attempts yetTime limit1sMemory limit512 MB
Judgeable
What Is Your Name Score?Easy1
String, ImplementationNo attempts yetTime limit1sMemory limit128 MB
Judgeable
Winning ICPCEasy1
Array, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
Simple ArithmeticEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
A New BeginningEasy1
ImplementationNo attempts yetTime limit2sMemory limit256 MB
Judgeable
CASIOEasy1
Implementation, MathNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Weird SymbolEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit256 MB
Judgeable
General ElectionEasy1
Array, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
Passionate SortingEasy1
Sorting, ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Hongik UniversityEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Jerry and TomEasy1
Math, Number theory +1No attempts yetTime limit1sMemory limit128 MB
Judgeable
Missing RunnerEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Happy Birthday, kipa00!Easy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Serious ProblemEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
BingoEasy1
Implementation, SimulationNo attempts yetTime limit0.999sMemory limit511 MB
Judgeable
Is it rated?Easy1
Implementation, StringNo attempts yetTime limit1sMemory limit512 MB
Judgeable
EmojiEasy1
String, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Overflowing with SweetnessEasy1
Math, Implementation +2No attempts yetTime limit1sMemory limit256 MB
Judgeable
Sort Master Bae JihoonEasy1
Array, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Endgame SpoilerEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Greetings!Easy1
String, ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Animal King ElectionEasy1
Implementation, StringNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Telephone Directory Information RoutingEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Counting ClausesEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Born in 1998, but 2541 in Thailand?!Easy1
Math, Implementation +2No attempts yetTime limit1sMemory limit1024 MB
Judgeable
What an Easy ProblemEasy1
Implementation, SimulationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Find the VerticesEasy1
Graph, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
RatsEasy1
Math, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Extreme TemperaturesEasy1
Implementation, Array +2No attempts yetTime limit2sMemory limit512 MB
Judgeable
PetrolEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
HOMWRKEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
Three IntegersEasy1
ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
Counting VowelsEasy1
String, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
ExamEasy1
Array, Implementation +1No attempts yetTime limit2sMemory limit512 MB
Judgeable
Inversion of a StringEasy1
String, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
ModeEasy1
Implementation, ArrayNo attempts yetTime limit2sMemory limit512 MB
Judgeable
The Walking AdamEasy1
String, Implementation +1No attempts yetTime limit2sMemory limit512 MB
Judgeable
Beginning the HuntEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
A+B (MC)Easy1
Simulation, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
You can submit after 0 seconds.Easy1
ImplementationNo attempts yetTime limit1.001sMemory limit512 MB
Judgeable
Print N MEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Dog TreatsEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit512 MB
Judgeable
Random Game~~~~~Easy1
Math, Probability +2No attempts yetTime limit1sMemory limit256 MB
Judgeable
Barn LotteryEasy1
Math, Implementation +2No attempts yetTime limit1sMemory limit1024 MB
Judgeable
What Is the Newbie Criterion?Easy1
Implementation, MathNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Minimum and Maximum 2Easy1
Array, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
TimecardEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Site ScoreEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Haughty CuisineEasy1
Implementation, Brute forceNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Yeongil's Ideal TypeEasy1
String, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Covid-19Easy1
Implementation, MathNo attempts yetTime limit2sMemory limit512 MB
Judgeable
CubesEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Three Points for a WinEasy1
Implementation, Array +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Real Final Gudegicup 1 Prize WinnersEasy1
Implementation, Brute forceNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Bottle ReturnEasy1
Math, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Another EruptionEasy1
Math, Geometry +1No attempts yetTime limit1sMemory limit1024 MB
Judgeable
Apples and PearsEasy1
Implementation, Math +1No attempts yetTime limit1sMemory limit1024 MB
Judgeable
CoinsEasy1
Implementation, Math +1No attempts yetTime limit2sMemory limit1024 MB
Judgeable
SciComLoveEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Boiling WaterEasy1
Math, Implementation +2No attempts yetTime limit1sMemory limit1024 MB
Judgeable
SMS from MCHSEasy1
Implementation, Brute forceNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Win Coffee Through a RaffleEasy1
Implementation, Array +2No attempts yetTime limit1sMemory limit1024 MB
Judgeable
Java BitecodeEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Sunrin Internet High School AnthemEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
KonpeitoEasy1
Math, Implementation +1No attempts yetTime limit2sMemory limit1024 MB
Judgeable
A Simple ProblemEasy1
Implementation, Brute forceNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Finding the Easiest ProblemEasy1
Implementation, ArrayNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
The Suffering of 5Easy1
Math, ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Construction Site SignEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Academic DistanceEasy1
Implementation, Math +1No attempts yetTime limit2sMemory limit512 MB
Judgeable
StatisticsEasy1
Array, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
The World RespondsEasy1
ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
The Fastest Sorting Algorithm In The WorldEasy1
ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
D2Easy1
String, String matchingNo attempts yetTime limit2.222sMemory limit222 MB
Judgeable
Not A + BEasy1
Implementation, Math +1No attempts yetTime limit1sMemory limit256 MB
Judgeable
driipEasy1
String, ImplementationNo attempts yetTime limit0.5sMemory limit16 MB
Judgeable
Printing Snails - SquareEasy1
ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Boss, you should gamble just for funEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit512 MB
Judgeable
HomecomingEasy1
Implementation, MathNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
SplitEasy1
Array, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
CalculationEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
RemainderEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
MovingEasy1
Implementation, MathNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Complex StringEasy1
String, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
CubeEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Hour HandEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Next CharacterEasy1
String, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
HeightEasy1
Math, ImplementationNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Ice CreamEasy1
Math, Implementation +1No attempts yetTime limit2sMemory limit1024 MB
Judgeable
Sports DayEasy1
Implementation, String +2No attempts yetTime limit2sMemory limit1024 MB
Judgeable
Algorithm Class - Algorithm Runtime 1Easy1
Math, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Algorithm Class - Algorithm Runtime 2Easy1
Math, ImplementationNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Algorithm Class - Algorithm Runtime 3Easy1
Math, Implementation +1No attempts yetTime limit1sMemory limit512 MB
Judgeable
Cupcake PartyEasy1
Math, Implementation +1No attempts yetTime limit1sMemory limit1024 MB
Judgeable
Football ScoringEasy1
ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Left BeehindEasy1
ImplementationNo attempts yetTime limit1sMemory limit1024 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
Yonsei UniversityRead N (0 or 1) and print either YONSEI or Leading the Way to the Future depending on its value.	Easy1	Implementation	No attempts yet	1s	128 MB	Judgeable
RectangleImplement a Rectangle class with width and height, range-checked setters, and methods for area, perimeter, and square detection.	Easy1	ImplementationMath+2	No attempts yet	1s	512 MB	Judgeable
The group project starts and the team leader is goneGiven a distance L, Sungwoo covers 1 to 5 per minute; print the smallest integer number of minutes needed to reach Mingeon.	Easy1	MathImplementation+1	No attempts yet	1s	128 MB	Judgeable
Who Am IPrint the exact line I'm Sexy.	Easy1	Implementation	No attempts yet	1s	128 MB	Judgeable
Helmet and VestGiven a list of helmet defense values and a list of vest values, print the sum of the best helmet and the best vest.	Easy1	ArrayImplementation+2	No attempts yet	1s	512 MB	Judgeable
What Is Your Name Score?Given an uppercase name, sum the alphabetical position of each letter and print the total.	Easy1	StringImplementation	No attempts yet	1s	128 MB	Judgeable
Winning ICPCCount how many problems each team fully solved (S = T), then report the team with the most solves, breaking ties by smallest index.	Easy1	ArrayImplementation	No attempts yet	2s	512 MB	Judgeable
Simple ArithmeticRead three integers a, b, c and print a times b divided by c within an absolute error of 1e-6.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
A New BeginningPrint the fixed string "파이팅!!" with no input, a simple output-only warmup task.	Easy1	Implementation	No attempts yet	2s	256 MB	Judgeable
CASIORead two integers N and M and print 1 if they are equal, otherwise 0.	Easy1	ImplementationMath	No attempts yet	2s	256 MB	Judgeable
Weird SymbolGiven two integers A and B, compute (A+B)*(A-B) and print the result.	Easy1	MathImplementation	No attempts yet	2s	256 MB	Judgeable
General ElectionSum each candidate's votes across regions and print the candidate number with the largest total.	Easy1	ArrayImplementation	No attempts yet	2s	512 MB	Judgeable
Passionate SortingRead N numbers and print them in ascending order separated by spaces.	Easy1	SortingImplementation	No attempts yet	1s	512 MB	Judgeable
Hongik UniversityRead a year N and print how many years have passed since 1946, so output N minus 1946.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Jerry and TomSubtract the fraction A/B from 1 and print the remaining cheese as P/Q in lowest terms.	Easy1	MathNumber theory+1	No attempts yet	1s	128 MB	Judgeable
Missing RunnerGiven the numbers 1 to N with exactly one omitted from a list of N - 1 distinct values, report the missing number.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Happy Birthday, kipa00!The problem asks contestants to output a UTF-8 birthday letter for kipa00, scored by hidden criteria unrelated to algorithmic problem solving.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Serious ProblemCount how many times 2 and e appear in a string of those two characters and report which is more frequent, or yee if tied.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
BingoPrint the fixed 5x5 bingo board showing which cells are colored, with # for colored and . for empty.	Easy1	ImplementationSimulation	No attempts yet	0.999s	511 MB	Judgeable
Is it rated?Given the name of a past Codeforces contest, print 1 if the contest was rated and 0 otherwise.	Easy1	ImplementationString	No attempts yet	1s	512 MB	Judgeable
EmojiGiven a short message, determine for each line whether it contains the Slack cat emoji expressed as an ASCII shortcode.	Easy1	StringImplementation+1	No attempts yet	1s	512 MB	Judgeable
Overflowing with SweetnessGiven triples a and c, find triple b with components in 1 to 100 such that performing the defined cake operation a cake b yields c.	Easy1	MathImplementation+2	No attempts yet	1s	256 MB	Judgeable
Sort Master Bae JihoonGiven N integers, print the largest value, which is the last element after sorting in ascending order.	Easy1	ArrayImplementation	No attempts yet	1s	256 MB	Judgeable
Endgame SpoilerThe input is the plot of Avengers: Endgame, and the required output is the film's English title.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Greetings!Given a greeting of the form h followed by e's and a y, print the same greeting but with twice as many e's.	Easy1	StringImplementation	No attempts yet	1s	512 MB	Judgeable
Animal King ElectionRead nine votes, each either Tiger or Lion, and print the candidate who received more than half of them.	Easy1	ImplementationString	No attempts yet	1s	512 MB	Judgeable
Telephone Directory Information RoutingGiven a 7-digit phone number, print YES if its first three digits are 555, otherwise NO.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Counting ClausesGiven a 3-SAT instance with m clauses and n variables, print satisfactory if it has at least eight clauses and unsatisfactory otherwise.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Born in 1998, but 2541 in Thailand?!Given a Buddhist calendar year between 1000 and 3000, print the corresponding Gregorian year by subtracting 543.	Easy1	MathImplementation+2	No attempts yet	1s	1024 MB	Judgeable
What an Easy ProblemImplement a function that returns the move losing to Kyojun each round, given the move he announces before playing.	Easy1	ImplementationSimulation	No attempts yet	1s	512 MB	Judgeable
Find the VerticesAn interactive-style task where a hidden edge between two vertices must be identified by querying the grader; input is fixed by the grader, not read.	Easy1	GraphImplementation	No attempts yet	2s	512 MB	Judgeable
RatsGiven three counts from a mark-recapture study, compute the Chapman estimator using the stated floor formula and print it.	Easy1	MathImplementation+1	No attempts yet	1s	512 MB	Judgeable
Extreme TemperaturesRead lines that pair a date with integer temperatures and print the smallest and largest values across every measurement.	Easy1	ImplementationArray+2	No attempts yet	2s	512 MB	Judgeable
PetrolGiven the petrol n used next month and the leftover quota k, compute the cost where the first 60+k liters cost 1500 each and the rest cost 3000 each.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
HOMWRKRead pairs of integers and print each pair's sum followed by its product on one line.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
Three IntegersGiven three integers, each either 1 or 2, print whichever value appears more often.	Easy1	Implementation	No attempts yet	2s	512 MB	Judgeable
Counting VowelsCount how many characters in a lowercase string are one of the vowels a, i, u, e, o.	Easy1	StringImplementation	No attempts yet	2s	512 MB	Judgeable
ExamRead three scores and print the sum of the two largest.	Easy1	ArrayImplementation+1	No attempts yet	2s	512 MB	Judgeable
Inversion of a StringReverse the substring of S from position A to position B, keep the rest unchanged, and print the resulting string.	Easy1	StringImplementation	No attempts yet	2s	512 MB	Judgeable
ModeCount how many times each value from 1 to M appears in the sequence and print the largest count.	Easy1	ImplementationArray	No attempts yet	2s	512 MB	Judgeable
The Walking AdamGiven a string of 'U' and 'D' steps, find the index of the first 'D', or the string length if no 'D' appears.	Easy1	StringImplementation+1	No attempts yet	2s	512 MB	Judgeable
Beginning the HuntA joke problem with no input that asks for a fixed uppercase answer with no spaces.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
A+B (MC)Build a Minecraft redstone circuit that reads two integers from a command interpreter and outputs their sum.	Easy1	SimulationImplementation+1	No attempts yet	1s	512 MB	Judgeable
You can submit after 0 seconds.Given the time of the most recent submission and a delay k, submit at or before T + k seconds; there is no input and any output works.	Easy1	Implementation	No attempts yet	1.001s	512 MB	Judgeable
Print N MPrint the integers from 1 to N*M as N lines of M space-separated numbers each.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Dog TreatsRead the counts of small, medium, and large treats, compute 1S + 2M + 3*L, and print happy if the score is at least 10, otherwise sad.	Easy1	MathImplementation	No attempts yet	2s	512 MB	Judgeable
Random Game~~~~~Output any integer between 1 and 2,147,483,647; the judge scores each of three runs by how close your number lands to a hidden random pick.	Easy1	MathProbability+2	No attempts yet	1s	256 MB	Judgeable
Barn LotteryGiven N cows and a W by H barn, find how many L by L square spaces fit inside the barn, capped at N.	Easy1	MathImplementation+2	No attempts yet	1s	1024 MB	Judgeable
What Is the Newbie Criterion?Given N and a year M, print NEWBIE! for years 1 or 2, OLDBIE! for years up to N, and TLE! otherwise.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Minimum and Maximum 2For each of T test cases, read N integers and print the smallest and largest value separated by a space.	Easy1	ArrayImplementation	No attempts yet	1s	256 MB	Judgeable
TimecardGiven a name made of uppercase and lowercase letters, print the same name with every uppercase letter converted to lowercase.	Easy1	StringImplementation	No attempts yet	1s	512 MB	Judgeable
Site ScoreRead four integers UR, TR, UO, TO and print 56UR + 24TR + 14UO + 6TO.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Haughty CuisineRead a list of set menus and print any one menu's dishes, preceded by how many dishes it has.	Easy1	ImplementationBrute force	No attempts yet	1s	512 MB	Judgeable
Yeongil's Ideal TypeGiven Yeongil's four-letter MBTI type, print the type in which each of the four letters is flipped to its opposite.	Easy1	StringImplementation+1	No attempts yet	1s	512 MB	Judgeable
Covid-19Given the average daily new cases p and hospitalizations q per million, print the risk color White, Yellow, or Red based on two thresholds.	Easy1	ImplementationMath	No attempts yet	2s	512 MB	Judgeable
CubesGiven N, print the sum of the cubes of all integers from 1 to N.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Three Points for a WinGiven the scores of N matches, add 3 points for each win, 1 for each draw, and 0 for each loss, then print the total.	Easy1	ImplementationArray+1	No attempts yet	1s	512 MB	Judgeable
Real Final Gudegicup 1 Prize WinnersOutput the fixed award name, prize name, and winner ID for each of the 13 prize categories, 39 lines total.	Easy1	ImplementationBrute force	No attempts yet	1s	512 MB	Judgeable
Bottle ReturnGiven counts of six container types, sum them and multiply by the 5 cent New York deposit to get the refund.	Easy1	MathImplementation+1	No attempts yet	1s	512 MB	Judgeable
Another EruptionGiven the area of a circular gas cloud, compute the circumference of the circle.	Easy1	MathGeometry+1	No attempts yet	1s	1024 MB	Judgeable
Apples and PearsGiven how many apples Axel sold and how many pears Petra sold, compare 7A with 13P and print who earned more or lika if equal.	Easy1	ImplementationMath+1	No attempts yet	1s	1024 MB	Judgeable
CoinsGiven n coins each showing 0 or 1, find the minimum number of flips needed to make all coins show the same side.	Easy1	ImplementationMath+1	No attempts yet	2s	1024 MB	Judgeable
SciComLoveRead an integer N between 1 and 2 and print the line SciComLove N times.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Boiling WaterGiven a boiling point B, compute pressure as 5B - 400 and report whether it is below, equal to, or above 100 kPa.	Easy1	MathImplementation+2	No attempts yet	1s	1024 MB	Judgeable
SMS from MCHSGiven today's and tomorrow's temperature and wind speed, print one of three fixed warning messages according to the first matching condition, or "No message".	Easy1	ImplementationBrute force	No attempts yet	1s	512 MB	Judgeable
Win Coffee Through a RaffleGiven nine problem scores, decide whether the student is a hacker (any score over the max), else eligible for the raffle if the total is at least 100, else not eligible.	Easy1	ImplementationArray+2	No attempts yet	1s	1024 MB	Judgeable
Java BitecodeRead a string of uppercase letters and print it with every J, A, and V removed, or print nojava if nothing remains.	Easy1	StringImplementation	No attempts yet	1s	1024 MB	Judgeable
Sunrin Internet High School AnthemGiven a string with no spaces, print its last five characters.	Easy1	StringImplementation	No attempts yet	1s	512 MB	Judgeable
KonpeitoGiven three counts A, B, C, find the minimum total pieces that must be added so all three counts become equal.	Easy1	MathImplementation+1	No attempts yet	2s	1024 MB	Judgeable
A Simple ProblemFor each of n problems, given its counts of branching and loop statements, decide whether the pair satisfies one of two simple conditions.	Easy1	ImplementationBrute force	No attempts yet	2s	256 MB	Judgeable
Finding the Easiest ProblemRead N titles with distinct difficulties and print the title whose difficulty is the smallest.	Easy1	ImplementationArray	No attempts yet	1s	1024 MB	Judgeable
The Suffering of 5Read a five-digit number and print the sum of the fifth powers of its five digits.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Construction Site SignGiven N, print an N by N no-entry sign pattern.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Academic DistanceGiven N points in order, compute the total Manhattan distance along the path from the first point to the last.	Easy1	ImplementationMath+1	No attempts yet	2s	512 MB	Judgeable
StatisticsFor each line of input, read n numbers and print the case number along with the minimum, maximum, and range of the sample.	Easy1	ArrayImplementation	No attempts yet	2s	1024 MB	Judgeable
The World RespondsPrint the single line "The world says hello!" to the world, with no input given.	Easy1	Implementation	No attempts yet	1s	1024 MB	Judgeable
The Fastest Sorting Algorithm In The WorldFor each test case, read a count N followed by N already sorted integers, then print the case number and the fixed text 'Sorting... done!'.	Easy1	Implementation	No attempts yet	1s	1024 MB	Judgeable
D2Given one line of text up to 10,000 characters, print D2 if it contains the adjacent pair D2 or d2, otherwise print unrated.	Easy1	StringString matching	No attempts yet	2.222s	222 MB	Judgeable
Not A + BGiven a and b, output any integer c different from a+b, with c restricted to the range 1 to 50.	Easy1	ImplementationMath+1	No attempts yet	1s	256 MB	Judgeable
driipGiven a lowercase string, print "cute" if it ends with the suffix "driip", otherwise print "not cute".	Easy1	StringImplementation	No attempts yet	0.5s	16 MB	Judgeable
Printing Snails - SquareGiven N, print a hollow N by N square outline of snail symbols, N+2 snails on the top and bottom lines and two snails per middle line.	Easy1	Implementation	No attempts yet	1s	512 MB	Judgeable
Boss, you should gamble just for funRead each bet amount until -1, then print the sum of all bet amounts that Yunsung lost.	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
HomecomingBitato is at his parents' house from morning A to morning B, and Bibako arrives on the afternoon of day C. Decide whether they can meet.	Easy1	ImplementationMath	No attempts yet	2s	1024 MB	Judgeable
SplitGiven a distinct integer sequence, find its maximum, then output the sum of elements before it and the sum of elements after it.	Easy1	ArrayImplementation	No attempts yet	2s	1024 MB	Judgeable
CalculationGiven two integers A and B, print the larger and then the smaller of A+B and A-B.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
RemainderRead a positive integer X between 1 and 100 and print the remainder when X is divided by 21.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
MovingGiven travel times X from A to B and Y from B to C, check whether X + Y fits within Z hours and 30 minutes.	Easy1	ImplementationMath	No attempts yet	2s	1024 MB	Judgeable
Complex StringGiven a string of length N over the letters A through E, decide whether at least 3 distinct characters appear.	Easy1	StringImplementation	No attempts yet	2s	1024 MB	Judgeable
CubeRead an integer X and print the volume of a cube with edge length X, which is X cubed.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
Hour HandGiven the mark A where the hour hand rests and B hours elapsed, print the mark the hand points to afterward.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
Next CharacterFor each position from 2 to N, print the previous character if the current character is J, one per line.	Easy1	StringImplementation	No attempts yet	2s	1024 MB	Judgeable
HeightGiven JOI's height a year ago and his height now, print how many centimeters he grew.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
Ice CreamFind the minimum cost of a tower at least S cm tall, where the base costs 250 yen and gives A cm and each extra layer costs 100 yen and adds B cm.	Easy1	MathImplementation+1	No attempts yet	2s	1024 MB	Judgeable
Sports DayGiven N students, K on the Red Team, and a string listing the other N-1 students' teams, decide Aoi's team.	Easy1	ImplementationString+2	No attempts yet	2s	1024 MB	Judgeable
Algorithm Class - Algorithm Runtime 1Given n, print how many times the single return statement in the MenOfPassion pseudocode runs, then print the degree of that count as a polynomial.	Easy1	MathImplementation+1	No attempts yet	1s	512 MB	Judgeable
Algorithm Class - Algorithm Runtime 2Given n, report how many times the loop body runs and the degree of that count as a polynomial.	Easy1	MathImplementation	No attempts yet	1s	512 MB	Judgeable
Algorithm Class - Algorithm Runtime 3Given n, count how many times the innermost statement of a double loop runs and report the degree of that count as a polynomial.	Easy1	MathImplementation+1	No attempts yet	1s	512 MB	Judgeable
Cupcake PartyGiven R boxes of 8 cupcakes and S boxes of 3 cupcakes, find the number left after 28 students each take one.	Easy1	MathImplementation+1	No attempts yet	1s	1024 MB	Judgeable
Football ScoringGiven each team's touchdowns, field goals, safeties, point-after kicks, and two-point conversions, compute each team's total score.	Easy1	Implementation	No attempts yet	1s	1024 MB	Judgeable
Left BeehindGiven the sweet and sour jar counts for each case, print whether Bill is left beehind, undecided, going to the convention, or never spoken to again at 13 jars.	Easy1	Implementation	No attempts yet	1s	1024 MB	Judgeable