Math and counting

Number theory, combinatorics, and geometry

Under construction

Still being built. Things may change

Total results13,152 problems

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
Equality Check
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Tuna
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
64 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
Addition
Easy1
Math, Implementation
No attempts yet
Time limit
1s
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
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
Rectangle
Easy1
Implementation, Math+2
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
The group project starts and the team leader is gone
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
128 MB
Judgeable
Helmet and Vest
Easy1
Array, Implementation+2
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Simple Arithmetic
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
CASIO
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Weird Symbol
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
256 MB
Judgeable
Hongik University
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Jerry and Tom
Easy1
Math, Number theory+1
No attempts yet
Time limit
1s
Memory limit
128 MB
Judgeable
Missing Runner
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Overflowing with Sweetness
Easy1
Math, Implementation+2
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Telephone Directory Information Routing
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Born in 1998, but 2541 in Thailand?!
Easy1
Math, Implementation+2
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Rats
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Petrol
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
HOMWRK
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
A+B (MC)
Easy1
Simulation, Implementation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Dog Treats
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Random Game~~~~~
Easy1
Math, Probability+2
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Barn Lottery
Easy1
Math, Implementation+2
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
What Is the Newbie Criterion?
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Site Score
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Covid-19
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Cubes
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Bottle Return
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Another Eruption
Easy1
Math, Geometry+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Apples and Pears
Easy1
Implementation, Math+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Coins
Easy1
Implementation, Math+1
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Boiling Water
Easy1
Math, Implementation+2
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Win Coffee Through a Raffle
Easy1
Implementation, Array+2
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Konpeito
Easy1
Math, Implementation+1
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
The Suffering of 5
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Academic Distance
Easy1
Implementation, Math+1
No attempts yet
Time limit
2s
Memory limit
512 MB
Judgeable
Not A + B
Easy1
Implementation, Math+1
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
Boss, you should gamble just for fun
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Homecoming
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Calculation
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Remainder
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Moving
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Cube
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Hour Hand
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Height
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Ice Cream
Easy1
Math, Implementation+1
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Sports Day
Easy1
Implementation, String+2
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Algorithm Class - Algorithm Runtime 1
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Algorithm Class - Algorithm Runtime 2
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Algorithm Class - Algorithm Runtime 3
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Cupcake Party
Easy1
Math, Implementation+1
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
A+B
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
5 MB
Judgeable
SciComLove (2022)
Easy1
String, Math
No attempts yet
Time limit
1s
Memory limit
256 MB
Judgeable
99 Problems
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Calculating defense ignore
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
512 MB
Judgeable
Easy-to-Solve Expressions
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Heavy Numbers
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Corona Virus Testing
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Microwave Mishap
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Window on the Wall
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Electric Bill
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
WARBOY
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Cup Covering
Easy1
Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Correct
Easy1
Implementation, Math
No attempts yet
Time limit
3s
Memory limit
1024 MB
Judgeable
Absolutely
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Acres
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Adding Integers
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Population
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Pizza
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Pups
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Triangle Height
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Watch
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Hurra!
Easy1
Implementation, Math
No attempts yet
Time limit
6s
Memory limit
1024 MB
Judgeable
Recipe
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Rain Diary
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Border Cells
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Room
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Elevator
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Comparing Rooms
Easy1
Implementation, Math
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable
Rectangle
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Same Numbers
Easy1
Math, Implementation
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Hour
Easy1
Implementation, Math
No attempts yet
Time limit
2s
Memory limit
1024 MB
Judgeable
Two-digit Integer
Easy1
Math, Implementation
No attempts yet
Time limit
1s
Memory limit
1024 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
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
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
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
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
AdditionRead two integers between -100,000 and 100,000 and print their sum.	Easy1	MathImplementation	No attempts yet	1s	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
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
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
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
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
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
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
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
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
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
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
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
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
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
Site ScoreRead four integers UR, TR, UO, TO and print 56UR + 24TR + 14UO + 6TO.	Easy1	MathImplementation	No attempts yet	1s	1024 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
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
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
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
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
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
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
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
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
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
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
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
A+BRead two integers A and B from one line and print their sum.	Easy1	ImplementationMath	No attempts yet	1s	5 MB	Judgeable
SciComLove (2022)Given N up to 10^9, print the string SciComLove after moving its first character to the end N times.	Easy1	StringMath	No attempts yet	1s	256 MB	Judgeable
99 ProblemsGiven a price N, find the positive integer closest to N that ends in 99, breaking ties toward the larger value.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Calculating defense ignoreGiven N potions with percent defense ignore values, print the combined defense ignore after each drink using 1 - (1 - V)(1 - A_i).	Easy1	ImplementationMath	No attempts yet	1s	512 MB	Judgeable
Easy-to-Solve ExpressionsGiven three distinct integers, the task is to check whether one is the sum or the product of the other two, printing 1, 2, or 3.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Heavy NumbersGiven two integers up to 1,000,000, compute each number's digit count times its digit sum, then print 1 or 2 for the heavier one, or 0 on a tie.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Corona Virus TestingGiven g groups of p people and t positive groups, the task compares individual testing with group testing and prints which uses fewer kits.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Microwave MishapGiven an MM:SS entry that the microwave reads as HH:MM, print the extra cooking time as HH:MM:SS.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Window on the WallGiven a wall's width, height, and border gap, find the area of the largest window that keeps the gap on every side.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Electric BillGiven two per-KWH rates and customer consumptions, the task prints each customer's bill, with the first 1000 KWH at the lower rate.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
WARBOYGiven the competitor's price A, the competitor's performance B, and WARBOY's price C, find WARBOY's performance when its price-to-performance is 3 times the competitor's.	Easy1	Math	No attempts yet	1s	1024 MB	Judgeable
Cup CoveringGiven the area of a circle, output its diameter with an absolute or relative error of at most 1e-9.	Easy1	Math	No attempts yet	1s	1024 MB	Judgeable
CorrectGiven a submission time HH:MM AM and a contest that started at 9:00 AM, print the number of minutes elapsed since the start.	Easy1	ImplementationMath	No attempts yet	3s	1024 MB	Judgeable
AbsolutelyGiven pairs of numbers on a line, the task is to print the distance between each pair with exactly one decimal place.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
AcresGiven the yard dimensions of a rectangular field, compute how many 5-acre seed bags are needed to plant all of it.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
Adding IntegersRead n integers from input and print their sum.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
PopulationGiven a starting population and an elapsed time, the task asks for the population after that time, with one birth every 4 seconds and one death every 7 seconds.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
PizzaGiven a slice's area and price and a round pizza's radius and price, print which option gives more pizza per dollar for each dataset.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
PupsGiven dog counts, food per dog, and price per pound for several cases, the task is to print the total cost of food for each case.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Triangle HeightGiven several triangle areas and base lengths, the task prints each triangle's height to two decimal places using h = 2a / b.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
WatchGiven the hour, minute, and second shown on a watch, print the time one second later in HH:MM:SS format.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Hurra!Print the numbers 1 to N, replacing multiples of 7 with Hurra!, multiples of 11 with Super!, and multiples of both with Wiwat!.	Easy1	ImplementationMath	No attempts yet	6s	1024 MB	Judgeable
RecipeGiven N ingredients with amounts at home, amounts needed, and unit prices, the task is to sum the cost of the missing amounts.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Rain DiaryGiven today's day number n and the day m from the record two weeks ago, print the day number for last Sunday's record.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Border CellsGiven the dimensions m and n of a rectangle on a grid, count how many cells lie on its border.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable
RoomGiven a room's width, length, and height in millimeters, decide whether the smaller side divided by the height is at least 2 and the larger side divided by the smaller is at most 2.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
ElevatorGiven the elevator's floor k, Misha's floor n, and the per-floor times a (stairs) and b (elevator), find the time to reach floor n by each method.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
Comparing RoomsGiven two rectangles' side lengths, the task is to print M, P, or E depending on which room has the larger area or whether the areas are equal.	Easy1	ImplementationMath	No attempts yet	1s	1024 MB	Judgeable
RectangleGiven integers A and B, the task reads them as height and width and prints their product as the rectangle's area.	Easy1	ImplementationMath	No attempts yet	2s	1024 MB	Judgeable
Same NumbersGiven a two-digit integer N, the task is to print 1 if its tens and ones digits are equal, otherwise print 0.	Easy1	MathImplementation	No attempts yet	2s	1024 MB	Judgeable
HourGiven a number of days X, the task is to print how many hours are in X days, with each day being 24 hours.	Easy1	ImplementationMath	No attempts yet	2s	1024 MB	Judgeable
Two-digit IntegerGiven a tens digit A and a ones digit B, the task is to print the two-digit number formed by them.	Easy1	MathImplementation	No attempts yet	1s	1024 MB	Judgeable