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DSA / Competitive Programming

Competitive Programming

3.1K+ posts

CSES Solutions - Another Game

Last Updated: 17 May 2024

There are n heaps of coins and two players who move alternately. On each move, a player selects some of the nonempty heaps and removes one coin from each heap. The player ...read more

Competitive Programming

Cryptography Hash Functions

Last Updated: 20 June 2025

Cryptographic hash functions are mathematical algorithms that transform input data into a fixed-length sequence of characters, referred to as a hash value. Cryptographic h...read more

Competitive Programming

LeetCode Contests Experience

Last Updated: 13 May 2024

Participating in LeetCode contests has been an exhilarating journey, marked by challenges, perseverance, and continuous learning. In this narrative, I share my personal ex...read more

Competitive Programming

Leetcode-Contests

Write It Up 2024

Competitve Exam Experiences

CSES Solutions - Swap Game

Last Updated: 28 May 2024

You are given a 3X3 grid containing the numbers 1,2...9. Your task is to perform a sequence of moves so that the grid will look like this:1 2 34 5 67 8 9On each move, you...read more

Competitive Programming

My Journey of Competitive Programming

Last Updated: 23 May 2024

Hello geeks,Today I want to share with you my competitive programming journey. Competitive programming means solving problems in different platforms. There are many benefi...read more

Competitive Programming

Write It Up 2024

CSES Solutions - Creating Strings II

Last Updated: 06 June 2024

Given a string, your task is to calculate the number of different strings that can be created using its characters.Examples:Input: S = "aa"Output: 1Explanation: There is o...read more

Competitive Programming

Venice Technique

Last Updated: 17 July 2024

Venice Technique is a strategy where we create a new data structure called Venice Set that mainly helps to answer range queries which involves updating all elements by a c...read more

Competitive Programming

Data Structures

Data Structures

CSES Solutions - Company Queries II

Last Updated: 14 June 2024

A company has n employees, who form a tree hierarchy where each employee has a boss, except for the general director. Your task is to process q queries of the form: who is...read more

Competitive Programming

CSES Solutions - Distance Queries

Last Updated: 03 December 2024

Given a tree consisting of n nodes. The task is to process q queries of the form: What is the distance between nodes a and b?Examples:Input: n = 5, q = 2, edges = {{1, 2},...read more

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Competitive Programming

CSES Solutions - Forest Queries

Last Updated: 01 July 2024

Given an N X N grid representing the map of a forest. Each square is either empty or contains a tree. The upper-left square has coordinates (1,1), and the lower-right squa...read more

Competitive Programming

CSES Solutions - Acyclic Graph Edges

Last Updated: 25 June 2024

Given an undirected graph, the task is to choose a direction for each edge so that the resulting directed graph is acyclic. You can print any valid solution.Example:Input:...read more

Competitive Programming

Learning the art of Competitive Programming

Last Updated: 13 June 2024

Learning the art of Competitive ProgrammingHow to begin with Competitive Programming?Top 10 Algorithms and Data Structures for Competitive ProgrammingHow to prepare for AC...read more

Competitive Programming

Programming Basics

Last Updated: 13 June 2024

Game Theory is a topic in competitive programming that involves a certain type of problem, where there are some players who play a game based on given rules and the task i...read more

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Competitive Programming

DP Problems Topic Wise

Last Updated: 13 March 2025

DP Problems on MathsFibonacci NumbersTribonacci NumbersLucas NumberBinomial CoefficientPascal's Triangle GenerationNth Row of Pascal TriangleCatalan Number Matrix Chain Mu...read more

Competitive Programming

From Beginner to Advanced Programmer: My Journey to Success in Competitive Programming

Last Updated: 02 January 2025

When I first entered university, I had no idea what to expect. Among a class of 50 students, I quickly realized I wasn’t alone in struggling with the programming challenge...read more

Competitive Programming

Competitve Exam Experiences

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