Watercolor

Bob is the owner of a shop named “Color Maker”. He has 256 types of watercolor in his shop. The type...

Be Like Hasib

Hasib, the famous programmer, uses a little game when he teaches Binary Search to his students. He r...

Buildings

There are n buildings in a row. The height of the i’th building is hi. You have ৳k. It is the amoun...

An Obvious Interactive Problem

I pick a number. You guess it. You can guess at most 25 times. For every guess you make, I will tel...

Balanced Relief

Thanos just finished his relief work. We all know that Thanos loves balanced things. So he finds so...

Most Difficult Problem Ever

You are given a function like below: long long F(int A, int B, int C, long long x) { long long...

Spot It!

Have you played the game Spot it!? Though there are many ways to play this game, the basic rule is t...

Mind Flayer Has Attacked Again!

Mind flayer, the shadow monster has attacked the town of Hawkins again. This time, the mind flayer h...

I Scream, You Scream!

Meem loves ice cream cones. So much so that she created an ice cream stand to share the joy of ice c...

Complex Operations

You are given an array A of length N. You have to perform two different types of operations. In the...

Poltu and Interesting Number

Poltu Loves interesting number. So he wants to find this type of number. The definition of an inter...

XOR Partition

Neo has a hidden array A of n integers where 0 ≤ Ai ≤ 109 is satisfied for each i from 1 to n . You...

Jenga Tower

Maybe you all are familiar with Jenga Game. “Jenga is played with 54 wooden blocks. Each block is th...

Sofdor Ali and Attack Optimization

Tuki and Jha is in the middle of an interplanetary war and their base is under drone attack! They ar...

The Multiplayer Action Game

Have you played the game Agar.io? According to wikipedia, Agar.io is a massively multiplayer action...

M-Sequence

A sequence is called M-sequence if after removing zero or more elements from the sequence the GCD o...