Problems

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Total results21,054 problems

Ship SelectionEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Acid and BaseEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Golden Ratio TestEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
QuadrilateralEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Print HookEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
AcronymsEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Longest Run of X'sEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Count VowelsEasy1
StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Heracles and the HydraEasy1
SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
MysteryEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
BaseballEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Meat on the GrillEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
ACM HotelEasy1
MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Golden Khon KaenEasy1
Hash mapNo attempts yetTime limit10sMemory limit64 MB
Judgeable
Reverse RotEasy1
String, SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Automated Checking MachineEasy1
ImplementationNo attempts yetTime limit3sMemory limit256 MB
Judgeable
The fellowship of the ringEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
ServerEasy1
Prefix sum, SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Mod ArithmeticEasy1
MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Do you like fractions?Easy1
Implementation, MathNo attempts yetTime limit2sMemory limit256 MB
Judgeable
OdditiesEasy1
ImplementationNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Quite a problemEasy1
String matching, StringNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Ragged RightEasy1
ImplementationNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Subin and the SequenceEasy1
Prefix sum, MathNo attempts yetTime limit1sMemory limit32 MB
Judgeable
Mosquito TrapEasy1
GeometryNo attempts yetTime limit1sMemory limit32 MB
Judgeable
Keystrokes per FingerEasy1
Implementation, ArrayNo attempts yetTime limit1sMemory limit32 MB
Judgeable
PolyhedronEasy1
MathNo attempts yetTime limit5sMemory limit256 MB
Judgeable
Magic ChessboardEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Kings of PersiaEasy1
MathNo attempts yetTime limit2sMemory limit256 MB
Judgeable
DaliaEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Omar's addition and subtraction checkEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Water BillEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Christmas PartyEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
We love kriiiEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A Special DayEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Happy or SadEasy1
StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Traffic Day BanEasy1
Implementation, ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Vertical ReadingEasy1
Simulation, Array +1No attempts yetTime limit1sMemory limit256 MB
Judgeable
Card GameEasy1
Array, SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Reversing Card SegmentsEasy1
Array, SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Count ValueEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Alphabet CountEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Find the AlphabetEasy1
Array, StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Insert BallsEasy1
Array, SimulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Swap BallsEasy1
Simulation, ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Three NumbersEasy1
SortingNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Minimum and MaximumEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
String analysisEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Comma Integer CountEasy1
StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Comma Sum MultilineEasy1
Implementation, StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Binary ConversionEasy1
Bit manipulationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A Day for CodingEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
ApplesEasy1
MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Rock paper scissorsEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Extreme SortEasy1
Array, SortingNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Friend countsEasy1
Graph, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Basic arithmeticEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
The nth Fibonacci NumberEasy1
Dynamic programming, RecursionNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Numbers Smaller Than XEasy1
ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
FactorialEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Professor Lee's ExamEasy1
Implementation, ArrayNo attempts yetTime limit1sMemory limit256 MB
Judgeable
0 = not cute / 1 = cuteEasy1
Implementation, ArrayNo attempts yetTime limit1sMemory limit2 MB
Judgeable
Penalty calculationEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
N-orthotopeEasy1
Implementation, GeometryNo attempts yetTime limit1sMemory limit256 MB
Judgeable
??!Easy1
StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
SHA-224Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
SHA-384Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
SHA-512Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
BASE16 EncodingEasy1
Implementation, StringNo attempts yetTime limit1sMemory limit256 MB
Judgeable
BASE16 DecodingEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Random gameEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Random gameEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Random gameEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
LottoEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Daily lottoEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Number baseball 5Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A+B with multiple test casesEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A+B until end of inputEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A+B until two zerosEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Comma-separated A+BEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Compute my GPAEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Vowel CountEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Palindrome CheckEasy1
String, Two pointersNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Star Pattern 17Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Star Pattern 21Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A×BEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Namuk's Chicken CoopEasy1
MathNo attempts yetTime limit2sMemory limit256 MB
Judgeable
A+B for each test caseEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A+B with case numbersEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Sum of the Numbers on One LineEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Sum 4Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Use Every LetterEasy1
String, ArrayNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Simon SaysEasy1
String, ImplementationNo attempts yetTime limit2sMemory limit256 MB
Judgeable
Help Chelsea!Easy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Fridge of Your DreamsEasy1
ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
The Eccentric ProfessorEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Communication ChannelsEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Balancing WeightsEasy1
Implementation, MathNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Cookie LoverEasy1
Math, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Angry Grammar SticklerEasy1
String, ImplementationNo attempts yetTime limit1sMemory limit256 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
Ship SelectionCount the ships whose fuel covers consumption times the integer-division travel time for the given distance.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
Acid and BaseCompute the pH from each given H+ or OH- concentration with the log formulas and print it rounded to two decimals.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Golden Ratio TestGiven T pairs of numbers, print golden for each pair whose ratio a/b is within 1 percent of the golden ratio.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
QuadrilateralPrint a solid rectangle of X letters for each given width and height, separating consecutive outputs with a blank line.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Print HookPrint the word Hook as fixed ASCII art with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
AcronymsGiven an acronym and candidate phrases, print the phrases whose word initials match the acronym letters in order.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Longest Run of X'sCount the longest run of consecutive X marks in each hallway and print its length in the required sentence.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
Count VowelsCount the vowels a, e, i, o, and u in each given lowercase word and print the result in the required sentence.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
Heracles and the HydraStarting from h heads, each c adds one head and each b removes one, and you report the count left after all actions.	Easy1	Simulation	No attempts yet	1s	256 MB	Judgeable
MysteryPrint Yonsei on one line with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
BaseballSum both teams runs over nine innings for each test case and print the higher scorer or Draw.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Meat on the GrillPrint each input row reversed to mirror the whole hotplate left to right.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
ACM HotelGuests fill rooms column by column from the elevator with lower floors first, so print the room number of the Nth guest.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Golden Khon KaenCount how many times the word GOLDEN can be formed from each given string of capital letters.	Easy1	Hash map	No attempts yet	10s	64 MB	Judgeable
Reverse RotReverse each message, then shift every character forward by N places in the 28-symbol alphabet.	Easy1	StringSimulation	No attempts yet	1s	256 MB	Judgeable
Automated Checking MachineCheck two five-point connectors and print Y only when each position pairs a plug with an outlet.	Easy1	Implementation	No attempts yet	3s	256 MB	Judgeable
The fellowship of the ringCount how many of the P punch heights fall within the fair range from waist height W to neck height N.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
ServerCount how many jobs from the front finish in request order before their total duration exceeds T.	Easy1	Prefix sumSimulation	No attempts yet	1s	256 MB	Judgeable
Mod ArithmeticGiven A, B and C, print (A+B)%C, ((A%C)+(B%C))%C, (AxB)%C and ((A%C)x(B%C))%C on four lines.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Do you like fractions?Convert each fraction to a mixed number by printing the quotient, the remainder, and the original denominator without reducing.	Easy1	ImplementationMath	No attempts yet	2s	256 MB	Judgeable
OdditiesGiven up to 20 integers, print whether each one is odd or even.	Easy1	Implementation	No attempts yet	2s	256 MB	Judgeable
Quite a problemPrint yes for each input line that contains problem in any capitalization, even inside longer words, and no otherwise.	Easy1	String matchingString	No attempts yet	2s	256 MB	Judgeable
Ragged RightGiven the lines of a paragraph, find the longest line length and print the sum of squared differences for every line except the last.	Easy1	Implementation	No attempts yet	2s	256 MB	Judgeable
Subin and the SequenceGiven the prefix averages of a sequence, recover the original sequence term by term.	Easy1	Prefix sumMath	No attempts yet	1s	32 MB	Judgeable
Mosquito TrapFind the smallest area of an axis-aligned square that covers all given points on the table.	Easy1	Geometry	No attempts yet	1s	32 MB	Judgeable
Keystrokes per FingerCount how many times each of the eight fingers presses a key when the given string is typed on the fixed US layout.	Easy1	ImplementationArray	No attempts yet	1s	32 MB	Judgeable
PolyhedronFor each test case, compute the face count of a convex polyhedron from V and E with Euler formula F = 2 - V + E.	Easy1	Math	No attempts yet	5s	256 MB	Judgeable
Magic ChessboardFlip each even row and then each even column exactly as specified to turn the n by m chessboard into a single color.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Kings of PersiaGiven birth and death year ranges, compute the smallest and largest possible age for each king.	Easy1	Math	No attempts yet	2s	256 MB	Judgeable
DaliaDecide for each test case whether a knight moves from the start square to the target square in exactly one legal move.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Omar's addition and subtraction checkCheck up to 100 equations of the form X + Y = Z or X - Y = Z and print YES or NO for each case.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Water BillCompute the bills of companies X and Y from the given usage and output the cheaper one.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
Christmas PartyTally each friend's score over M guessing games from the targets and the written names.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
We love kriiiPrint the fixed Korean phrase 강한친구 대한육군 on two lines with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A Special DayCompare the given month and day against February 18 and print Before, After, or Special.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Happy or SadCount the happy (:-)) and sad (:-( ) emoticons in the message and print happy, sad, unsure, or none.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
Traffic Day BanCount how many of the five given car number digits match the date digit.	Easy1	ImplementationArray	No attempts yet	1s	256 MB	Judgeable
Vertical ReadingRead five given words column by column from top to bottom, skipping missing letters in shorter words, and print the letters in that order.	Easy1	SimulationArray+1	No attempts yet	1s	256 MB	Judgeable
Card GameCompare the ten cards of A and B round by round and print A or B for the side with more round wins, or D on a tie.	Easy1	ArraySimulation	No attempts yet	1s	256 MB	Judgeable
Reversing Card SegmentsReverse ten given segments of a 20-card row that starts in order and print the final arrangement.	Easy1	ArraySimulation	No attempts yet	1s	256 MB	Judgeable
Count ValueCount how many times the integer v appears among the N given integers.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
Alphabet CountCount how many times each letter from a to z appears in the given lowercase word.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
Find the AlphabetGiven a lowercase word of length at most 100, output the 0-based first index of each letter a to z, or -1 when absent.	Easy1	ArrayString	No attempts yet	1s	256 MB	Judgeable
Insert BallsFill N baskets by writing ball number k into baskets i through j for each operation, then print all baskets.	Easy1	ArraySimulation	No attempts yet	1s	256 MB	Judgeable
Swap BallsSwap the balls in the given basket pairs M times and print the final ball in each of the N baskets.	Easy1	SimulationArray	No attempts yet	1s	256 MB	Judgeable
Three NumbersPrint the median of three given integers between 1 and 100.	Easy1	Sorting	No attempts yet	1s	256 MB	Judgeable
Minimum and MaximumRead N integers and print the smallest and the largest separated by a space.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
String analysisCount the lowercase letters, uppercase letters, digits, and spaces in each input line until end of input.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Comma Integer CountCount the maximal runs of digits in a comma-separated digit string.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
Comma Sum MultilineJoin the input lines into one comma-separated string, split it at commas, and print the sum of the numbers.	Easy1	ImplementationString	No attempts yet	1s	256 MB	Judgeable
Binary ConversionPrint the binary representation of the given natural number N with no leading zeros.	Easy1	Bit manipulation	No attempts yet	1s	256 MB	Judgeable
A Day for CodingA poem about coding and algorithms with no computational task; there is no input, output, or problem to solve.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
ApplesEach school splits its apples evenly among its students, and the program sums the leftover apples.	Easy1	Math	No attempts yet	1s	256 MB	Judgeable
Rock paper scissorsRead the past rounds and print 0 when there are none, 2 when the opponent last threw rock, and 0 otherwise.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Extreme SortCheck whether the given numbers are in non-decreasing order and print yes or no.	Easy1	ArraySorting	No attempts yet	1s	256 MB	Judgeable
Friend countsCount the friends of each of N students from M mutual friendship pairs and print the N totals in order.	Easy1	GraphImplementation	No attempts yet	1s	256 MB	Judgeable
Basic arithmeticPrint the sum, difference, product, quotient, and remainder of two given natural numbers.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
The nth Fibonacci NumberGiven n up to 20, compute the nth Fibonacci number defined from 0 and 1.	Easy1	Dynamic programmingRecursion	No attempts yet	1s	256 MB	Judgeable
Numbers Smaller Than XPrint the elements of the sequence that are smaller than X in their original order.	Easy1	Array	No attempts yet	1s	256 MB	Judgeable
FactorialPrint the factorial of a given integer N, where N is between 0 and 12.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Professor Lee's ExamPrint the numbers of students whose ten answers exactly match 1, 2, 3, 4, 5, 1, 2, 3, 4, 5 in order.	Easy1	ImplementationArray	No attempts yet	1s	256 MB	Judgeable
0 = not cute / 1 = cuteCount the 0 and 1 votes and print whether Junhee is cute based on the majority.	Easy1	ImplementationArray	No attempts yet	1s	2 MB	Judgeable
Penalty calculationFind the earliest submission with the highest score and compute the penalty from its time and attempt count.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
N-orthotopeGiven two axis-aligned boxes in N dimensions, print the dimension of their overlap, or -1 when they do not meet.	Easy1	ImplementationGeometry	No attempts yet	1s	256 MB	Judgeable
??!Print the given id with ??! appended to it.	Easy1	String	No attempts yet	1s	256 MB	Judgeable
SHA-224Print the 56-digit lowercase hexadecimal SHA-224 hash of the given alphanumeric string.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
SHA-384Read an alphanumeric string and print its SHA-384 hash as 96 lowercase hex digits.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
SHA-512Print the SHA-512 hash of an alphanumeric string up to 50 characters long as lowercase hexadecimal.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
BASE16 EncodingRead a string of up to 50 letters and digits and print each character as two uppercase hex digits in order.	Easy1	ImplementationString	No attempts yet	1s	256 MB	Judgeable
BASE16 DecodingDecode a BASE16 string by converting each pair of hex digits back into its ASCII character.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Random gamePrint the integer 5 on the first line with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Random gamePrint the number 1 on one line with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Random gamePrint 1, the smallest integer from 1 to 2,147,483,647, with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
LottoPrint 1 2 3 4 5 6, the lexicographically smallest increasing pick of six numbers from 1 to 45.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Daily lottoPrint 1 2 3 4 5 6, the lexicographically smallest increasing six-number sequence from 1 to 45.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Number baseball 5Print the fixed number 1234 with no input.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A+B with multiple test casesRead T pairs of integers and print each pair's sum on its own line.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A+B until end of inputRead pairs of integers until end of input and print each pair sum on its own line.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A+B until two zerosRead integer pairs until 0 0 and print the sum of each pair on its own line.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Comma-separated A+BAdd pairs of single-digit integers given as comma-separated values for each test case.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
Compute my GPACompute each semester total credits and credit-weighted GPA from course credits and grades, rounded to one decimal place.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Vowel CountCount how many letters of the given lowercase word are vowels (a, e, i, o, u).	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Palindrome CheckCheck whether the given lowercase word reads the same forward and backward and print 1 or 0.	Easy1	StringTwo pointers	No attempts yet	1s	256 MB	Judgeable
Star Pattern 17Print a hollow isosceles triangle of height N, with stars on the two sides and a solid star base.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Star Pattern 21Print the star pattern for the given N exactly as the samples show.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A×BRead two integers A and B and print their product.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Namuk's Chicken CoopFrom the total number of legs and chickens, find how many chickens lost a leg and how many are intact.	Easy1	Math	No attempts yet	2s	256 MB	Judgeable
A+B for each test caseAdd two single-digit integers per test case and print each sum as Case #x: y.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
A+B with case numbersRead T pairs of single-digit integers and print each sum as Case #x: A + B = C.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Sum of the Numbers on One LineAdd all the space-separated numbers on the first line and print the total.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Sum 4Add the integers on each of T input lines and print each sum on its own line.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Use Every LetterDecide for each of up to 50 sentences whether it contains every letter a to z, and list the missing letters otherwise.	Easy1	StringArray	No attempts yet	2s	256 MB	Judgeable
Simon SaysPrint the trailing part of every command that starts with 'Simon says' and skip all other commands.	Easy1	StringImplementation	No attempts yet	2s	256 MB	Judgeable
Help Chelsea!For each test case, print the name of the player with the highest price from the given list.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
Fridge of Your DreamsConvert each of up to 1000 24-bit binary strings to its decimal form without leading zeros.	Easy1	Implementation	No attempts yet	1s	256 MB	Judgeable
The Eccentric ProfessorCompare n times s against d plus n times p for each test case and print which option costs less.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Communication ChannelsCompare each transmitted binary string with its received copy and print OK when they match and ERROR otherwise.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable
Balancing WeightsYou sum the signed positions of the weights and report whether the lever tips left, tips right, or stays balanced.	Easy1	ImplementationMath	No attempts yet	1s	256 MB	Judgeable
Cookie LoverGiven N cookies and C eaten per day, compute how many days pass until none remain.	Easy1	MathImplementation	No attempts yet	1s	256 MB	Judgeable
Angry Grammar SticklerThe program counts banned words and phrases in each sentence and prints ten times that count.	Easy1	StringImplementation	No attempts yet	1s	256 MB	Judgeable