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29 Commits
A+B.cpp
A+B.cpp
 
 
APlusBAgain.java
APlusBAgain.java
 
 
AgainTwentyFive.java
AgainTwentyFive.java
 
 
AlmostPrime.java
AlmostPrime.java
 
 
AmusingJoke.java
AmusingJoke.java
 
 
AntonAndDanik.c
AntonAndDanik.c
 
 
AntonAndLetters.c
AntonAndLetters.c
 
 
AntonAndPolihedrons.c
AntonAndPolihedrons.c
 
 
ArpasHardExam.java
ArpasHardExam.java
 
 
ArrayColoring.cpp
ArrayColoring.cpp
 
 
ArrivalOfTheGeneral.c
ArrivalOfTheGeneral.c
 
 
BachgoldProblem.cpp
BachgoldProblem.cpp
 
 
BalancedArray.cpp
BalancedArray.cpp
 
 
BalancedRound.java
BalancedRound.java
 
 
BearAndBigBrother.c
BearAndBigBrother.c
 
 
BeautifulAverage.cpp
BeautifulAverage.cpp
 
 
BeautifulYear.c
BeautifulYear.c
 
 
Bit++.c
Bit++.c
 
 
BitwiseReversion.cpp
BitwiseReversion.cpp
 
 
BlackSquare.cpp
BlackSquare.cpp
 
 
BlankSpace.cpp
BlankSpace.cpp
 
 
BoardMoves.java
BoardMoves.java
 
 
Boredom.java
Boredom.java
 
 
BoringApartments.cpp
BoringApartments.cpp
 
 
Borze.java
Borze.java
 
 
BoyOrGirl..c
BoyOrGirl..c
 
 
BussinessTrip.java
BussinessTrip.java
 
 
Buttons.cpp
Buttons.cpp
 
 
ByAShovel.java
ByAShovel.java
 
 
CalculatingFunction.c
CalculatingFunction.c
 
 
Candies.java
Candies.java
 
 
CandiesAndTwoSisters.c
CandiesAndTwoSisters.c
 
 
CardGame.java
CardGame.java
 
 
CaseOfTheZerosAndOnes.java
CaseOfTheZerosAndOnes.java
 
 
ChatRoom.c
ChatRoom.c
 
 
CheapTravel.java
CheapTravel.java
 
 
Chemistry.java
Chemistry.java
 
 
ChewbaccaAndNumber.java
ChewbaccaAndNumber.java
 
 
ChoosingTeams.cpp
ChoosingTeams.cpp
 
 
CircleofAppleTrees.cpp
CircleofAppleTrees.cpp
 
 
ClockAndStrings.java
ClockAndStrings.java
 
 
Codeforces.iml
Codeforces.iml
 
 
CodeforcesCheaking.java
CodeforcesCheaking.java
 
 
ComparisonString.java
ComparisonString.java
 
 
ConstructTheString.java
ConstructTheString.java
 
 
CoverinWater.cpp
CoverinWater.cpp
 
 
CreatingWords.cpp
CreatingWords.cpp
 
 
CutRibbon.cpp
CutRibbon.cpp
 
 
CutRibbon.java
CutRibbon.java
 
 
Desorting.cpp
Desorting.cpp
 
 
DieRoll.cpp
DieRoll.cpp
 
 
DislikeOfThrees.java
DislikeOfThrees.java
 
 
DistinctSplit.java
DistinctSplit.java
 
 
DivisibilityProblem.c
DivisibilityProblem.c
 
 
Division.java
Division.java
 
 
DoNotBeDistracted.cpp
DoNotBeDistracted.cpp
 
 
DominoPiling.c
DominoPiling.c
 
 
DontTrytoCount.cpp
DontTrytoCount.cpp
 
 
DoremysPaint3.cpp
DoremysPaint3.cpp
 
 
Dragons.java
Dragons.java
 
 
DreamoonAndStairs.java
DreamoonAndStairs.java
 
 
Drinks.c
Drinks.c
 
 
Dubstep.c
Dubstep.c
 
 
EasyProblem.cpp
EasyProblem.cpp
 
 
Elephant.c
Elephant.c
 
 
EqualCandies.cpp
EqualCandies.cpp
 
 
EvenArray.cpp
EvenArray.cpp
 
 
EvenOdds.c
EvenOdds.c
 
 
Expression.c
Expression.c
 
 
FairDivision.cpp
FairDivision.cpp
 
 
FairPlayoff.cpp
FairPlayoff.cpp
 
 
FizzBuzzRemixed.cpp
FizzBuzzRemixed.cpp
 
 
FollowingTheString.java
FollowingTheString.java
 
 
Football.c
Football.c
 
 
Football.java
Football.java
 
 
FoxAndSnake.java
FoxAndSnake.java
 
 
GameWithIntegers.cpp
GameWithIntegers.cpp
 
 
GameWithSticks.java
GameWithSticks.java
 
 
Games.c
Games.c
 
 
GeorgeAndAccomodation.c
GeorgeAndAccomodation.c
 
 
GoodKid.cpp
GoodKid.cpp
 
 
GoodPrefixes.java
GoodPrefixes.java
 
 
GravityFlip.c
GravityFlip.c
 
 
HQ9+.c
HQ9+.c
 
 
HalloumiBoxes.cpp
HalloumiBoxes.cpp
 
 
HelpfulMaths.c
HelpfulMaths.c
 
 
HitTheLottery.c
HitTheLottery.c
 
 
HolidayOfEquality.java
HolidayOfEquality.java
 
 
HowMuchDoesDaytonaCost.cpp
HowMuchDoesDaytonaCost.cpp
 
 
Hulk.c
Hulk.c
 
 
ICPCBalloons.cpp
ICPCBalloons.cpp
 
 
IQtest.c
IQtest.c
 
 
IWannaBeTheGuy.c
IWannaBeTheGuy.c
 
 
I_Love_Username.java
I_Love_Username.java
 
 
IlyaAndBankAccount.java
IlyaAndBankAccount.java
 
 
InSearchOfAnEasyProblem.c
InSearchOfAnEasyProblem.c
 
 
Increasing.cpp
Increasing.cpp
 
 
InsomniaCure.c
InsomniaCure.c
 
 
InterestingDrink.cpp
InterestingDrink.cpp
 
 
InterestingDrink.java
InterestingDrink.java
 
 

Repository files navigation

Codeforces Solutions

A collection of solutions to problems from Codeforces, a competitive programming platform featuring algorithmic problems of varying difficulty.

Overview

This repository contains solutions to various Codeforces problems solved in multiple programming languages including:

  • C (.c files)
  • C++ (.cpp files)
  • Java (.java files)

Problem Categories

The solutions cover a wide range of problem types:

  • Basic Problems: A+B, Simple Math Operations, String Manipulation
  • Greedy Algorithms: Fair Division, Good Kid, Halloumi Boxes
  • Dynamic Programming: Boredom, Cut Ribbon, Candies
  • Graph Problems: Dragons, Gravity Flip
  • Number Theory: Divisibility problems, Prime numbers
  • String Problems: Palindromes, Pattern matching, Character manipulation
  • Bit Manipulation: Bitwise operations
  • Simulation Problems: Array operations, Game simulations

Sample Problems Included

Some notable problems in this repository:

  • A+B.cpp - Basic input/output
  • BeautifulYear.c - Date calculations
  • Dragons.java - Game simulation
  • Boredom.java - Dynamic programming
  • CutRibbon.cpp - DP problem
  • Candies.java - Greedy algorithm
  • Football.java - Simple conditional logic
  • And many more...

Getting Started

Compiling and Running

C files:

gcc filename.c -o a
./a

C++ files:

g++ filename.cpp -o a
./a

Java files:

javac filename.java
java filename

Learning Outcomes

Working through these problems helps develop:

  • Problem-solving skills
  • Algorithm design and optimization
  • Proficiency in multiple programming languages
  • Time and space complexity analysis
  • Competitive programming techniques

Notes

  • Most solutions read from standard input and output results to standard output
  • Some problems may have multiple test cases to verify correctness
  • Solutions are organized alphabetically by problem name

Resources

Last Updated: June 2026

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