CSES Problem Set Solutions

Last Updated : 16 Apr, 2024

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.

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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.

Table of Content

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:

Introductory Problems
Sorting and Searching
Dynamic Programming
Graph Algorithms
Range Queries
Tree Algorithms
Mathematics
String Algorithms
Geometry
Advanced Techniques
Additional 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:

Counting Rooms
Labyrinth
Building Roads
Message Route
Building Teams
Round Trip
Monsters
Shortest Routes I
Shortest Routes II
High Score
Flight Discount
Cycle Finding
Flight Routes
Round Trip II
Course Schedule
Longest Flight Route
Game Routes
Investigation
Planets Queries I
Planets Queries II
Planets Cycles
Road Reparation
Road Construction
Flight Routes Check
Planets and Kingdoms
Giant Pizza
Coin Collector
Mail Delivery
De Bruijn Sequence
Teleporters Path
Hamiltonian Flights
Knight's Tour
Download Speed
Police Chase
School Dance
Distinct Routes

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.

Static Range Sum Queries
Static Range Minimum Queries
Dynamic Range Sum Queries
Dynamic Range Minimum Queries
Range Xor Queries
Range Update Queries
Forest Queries
Hotel Queries
List Removals
Salary Queries
Prefix Sum Queries
Pizzeria Queries
Subarray Sum Queries
Distinct Values Queries
Increasing Array Queries
Forest Queries II
Range Updates and Sums
Polynomial Queries
Range Queries and Copies

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.

Subordinates
Tree Matching
Tree Diameter
Tree Distances I
Tree Distances II
Company Queries I
Company Queries II
Distance Queries
Counting Paths
Subtree Queries
Path Queries
Path Queries II
Distinct Colors
Finding a Centroid
Fixed-Length Paths I
Fixed-Length Paths II

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.

Josephus Queries
Exponentiation
Exponentiation II
Counting Divisors
Common Divisors
Sum of Divisors
Divisor Analysis
Prime Multiples
Counting Coprime Pairs
Binomial Coefficients
Creating Strings II
Distributing Apples
Christmas Party
Bracket Sequences I
Bracket Sequences II
Counting Necklaces
Counting Grids
Fibonacci Numbers
Throwing Dice
Graph Paths I
Graph Paths II
Dice Probability
Moving Robots
Candy Lottery
Inversion Probability
Stick Game
Nim Game I
Nim Game II
Stair Game
Grundy's Game
Another Game

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.

Meet in the Middle
Hamming Distance
Beautiful Subgrids
Reachable Nodes
Reachability Queries
Cut and Paste
Substring Reversals
Reversals and Sums
Necessary Roads
Necessary Cities
Eulerian Subgraphs
Monster Game I
Monster Game II
Subarray Squares
Houses and Schools
Knuth Division
Apples and Bananas
One Bit Positions
Signal Processing
New Roads Queries
Dynamic Connectivity
Parcel Delivery
Task Assignment
Distinct Routes II

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.

Shortest Subsequence
Counting Bits
Swap Game
Prüfer Code
Acyclic Graph Edges
Strongly Connected Edges
Even Outdegree Edges
Multiplication Table
Advertisement
Special Substrings
Permutation Inversions
Maximum Xor Subarray
Movie Festival Queries
Chess Tournament
Tree Traversals
Network Renovation
Graph Girth
Intersection Points
Inverse Inversions
Monotone Subsequences
String Reorder
Stack Weights
Pyramid Array
Increasing Subsequence II
String Removals
Bit Inversions
Xor Pyramid
Writing Numbers
String Transform
Letter Pair Move Game
Maximum Building I
Sorting Methods
Cyclic Array
List of Sums
Increasing Array II
Food Division
Bit Problem
Swap Round Sorting
Binary Subsequences
Tree Isomorphism I
Counting Sequences
Critical Cities
School Excursion
Coin Grid
Robot Path
Programmers and Artists
Course Schedule II
Removing Digits II
Coin Arrangement
Counting Bishops
Grid Puzzle I
Grid Puzzle II
Empty String
Grid Paths
Bit Substrings
Reversal Sorting
Counting Reorders
Book Shop II
Network Breakdown
Visiting Cities
Missing Coin Sum Queries
Number Grid
Maximum Building II
Filling Trominos
Stick Divisions
Coding Company
Flight Route Requests
Two Stacks Sorting
Tree Isomorphism II
Forbidden Cities
Area of Rectangles
Grid Completion
Creating Offices
Permutations II
Functional Graph Distribution
New Flight Routes
Grid Path Construction
Grid Path Construction

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