Problems

You are given an array a of n positive integers. You Have to perform Q query on it. In each query, y...

• By prodip_bsmrstu
• PersistentSegmentTree
• Hard
• 2/29 Solutions
• 105 Submissions

This time I’m going to introduce you to a new land, called String Land. In String Land there are N ...

• By prodip_bsmrstu
• DataStructure, Trie
• Moderate
• 4/7 Solutions
• 19 Submissions

A country named Mueawin has one or more villages and one or more people live in every village. Two p...

• By AbuBokor
• DFS, DisjointSets
• Easy
• 21/23 Solutions
• 58 Submissions

There are two friends F1 and F2 in a city. They both are student of FCB High School. Also, they resi...

• By prodip_bsmrstu
• NumberTheory
• Moderate
• 28/41 Solutions
• 73 Submissions

On Eid-Day the king of Mueawin announced an interesting game for the people of his country. The rule...

• By AbuBokor
• Implementation, Sorting
• Moderate
• 29/46 Solutions
• 143 Submissions

Who doesn’t know about thanos the genius mad titan, who waste his life acquiring the infinity stones...

• By jisan047
• ChineseRemainderTheorem
• Moderate
• 16/22 Solutions
• 113 Submissions

In this problem you will have to solve a puzzle game named “Pipeline”. 90’s kids knows this game ver...

• By naimulhasan
• Backtracking, DFS, DP
• Moderate
• 2/6 Solutions
• 19 Submissions

As you know earth is affected by corona virus. Situation becomes worse day by day .Almost 80% people...

• By recycle_bin
• BinarySearch, Bitmask
• Easy
• 17/20 Solutions
• 47 Submissions

Note that the memory limit is unusual. Paltu is a good programmer and he loves prime numbers. One da...

• By Sajjat004
• NumberTheory
• Moderate
• 36/51 Solutions
• 147 Submissions

The greatest common divisor (GCD) of two integers, is the largest integer that divides both of the i...

• By Sajjat004
• NumberTheory
• Moderate
• 43/97 Solutions
• 488 Submissions

You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c...

• By iammarajul
• BruteForce, DP, Implementation
• Moderate
• 50/159 Solutions
• 628 Submissions

We all know what Tic-Toc-Toe works. But in the anime world, people aren’t really interested in norma...

• By asifthegreat
• Graph
• Moderate
• 0/4 Solutions
• 18 Submissions

There are n bamboos in a row. Khan the bamboo cutter is going to cut them all one by one. He can do ...

• By shihan04
• DP
• Moderate
• 21/61 Solutions
• 149 Submissions

There is a boy named Tareq Abrar who is very lazy. He likes sleeping. He also likes eating. His moth...

• By Tareq_Abrar
• BinarySearch, Math, NumberTheory
• Moderate
• 15/43 Solutions
• 162 Submissions

Everything is short in the Short Land. People use short words when talking to each other or writing ...

• By mdvirus
• String
• Easy
• 79/96 Solutions
• 189 Submissions

This is a straightforward problem. You will be given an incorrect mathematical sum expression like A...

• By mdvirus
• Math
• Easy
• 79/94 Solutions
• 165 Submissions

Santu is a newcomer in Rangpur. He could not adjust to the strange weather in Rangpur. He goes out f...

• By newbie_mukit, mdvirus
• Implementation
• Easy
• 163/206 Solutions
• 700 Submissions

Boltu gave a simple task to his best friend Poltu. You are a good programmer. So, Poltu hired you to...

• By RamprosadG
• Moderate
• 4/12 Solutions
• 34 Submissions

Mr. Hikiko will react with a “Not Bad”, if you can solve this problem. An array is a Not Bad array i...

• By Riaz_BSMRSTU
• Moderate
• 24/35 Solutions
• 64 Submissions

You are given a string S, that contains only lowercase English letters. You can change a letter to a...

• By RamprosadG
• Easy
• 107/119 Solutions
• 220 Submissions