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CSES Problem Set Solutions - GeeksforGeeks

CSES Problem Set Solutions

Last Updated : 23 Jul, 2025

In this article, we have compiled comprehensive, high-quality tutorials on the CSES Problem Set Solutions to assist you in understanding the problem set for learning algorithmic programming.

What is CSES Problem Set?

CSES Problem Set is a collection of competitive programming tasks hosted on the CSES website. These problems cover a wide range of topics in algorithms and data structures, providing a valuable resource for programmers to crack world-level programming contests like ACM-ICPC, Google Code Jam, IOI, and many more. Whether you are a beginner looking to practice coding or an experienced coder preparing for coding competitions, the CSES Problem Set offers a variety of set of challenges to test and enhance your programming abilities.

CSES Full Form:

Based on majority of user comments, the best matched full form of CSES in the context of competitive programming is "Code Submission Evaluation System."

It is a collection of algorithmic programming problems available on the CSES (Code Submission Evaluation System) website. The platform is designed to help programmers practice and improve their skills in solving various algorithmic problems using the C++ programming language.

Types of CSES Problems:

As per CSES, we can distribute the CSES Problem Set into following types of problems:

Let us deep dive into each type of Problem Set.

Introductory Problems in CSES Problem Set Solutions:

This section includes fundamental problems that serve as a great starting point for beginners. They cover essential concepts and techniques, making them ideal for building a strong foundation. The prerequisites are Basics of Arrays, Strings, Number Theory, Bit Manipulation, etc.

Sorting and Searching based CSES Problem Solutions:

This section includes a range of difficulty levels and are great for practicing sorting, searching and related algorithms. The prerequisites are Linear Search, Binary Search, Binary Search on Answer, Sorting etc.

Dynamic Programming based CSES Problem Set Solutions:

This section focuses on problems that can be efficiently solved using dynamic programming techniques. DP is a powerful paradigm for solving optimization problems by breaking them down into smaller subproblems and reusing their solutions. The prerequisites are: Dynamic Programming, DP on grids, DP on Strings, DP on Subsequences, Partition DP etc.

Graph Algorithms based CSES Solution: Range Queries based CSES Solution:

This section covers a variety of problems involving range queries, which are fundamental to many algorithms and data structures. These problems span various domains such as arrays, strings, and trees, presenting a comprehensive set of challenges to hone your algorithmic skills.

Tree Algorithms based CSES Solution:

This section includes a range of difficulty levels and is great for practicing tree-related algorithms. The prerequisites are understanding basic tree concepts, tree traversal (pre-order, in-order, post-order), binary search trees, etc.

Mathematics based CSES Solution:

This section offers a variety of mathematical problems focused on handling range queries efficiently. These problems cover diverse topics such as arithmetic, algebra, and calculus, presenting a comprehensive set of challenges to enhance your mathematical problem-solving skills.

String Algorithms based CSES Solutions:

This section includes a variety of interesting string-related problems including palindrome-related problems, substring order, and more. The prerequisite is Pattern Searching.

Geometry based CSES Problem Set Solutions:

This section includes geometry problems offer fascinating challenges that involve shapes, angles, and spatial relationships. The prerequisites are Shoelace formula, Euclidean distance, Basic Geometry for Competitive Programming, etc.

Advanced Techniques based CSES Problem Set Solution:

This section includes a variety of difficulty levels and is excellent for practicing advanced techniques problems based on the CSES Problem Set. Understanding the basic data structure and algorithm.

Additional Problems based CSES Problem Set Solution:

This section includes a variety of difficulty levels and is excellent for practicing additional problems based on the CSES Problem Set. Understanding the basic data structure and algorithm.


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