Defeat in Final BattleSifatul Islam is a great fan of Iron man. He is planning to make a suit for iron man. The suit can s...

EkupaiHacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer...

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

OCD Returns!This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o...

Convert String Into PalindromeA palindrome is a word, number, phrase, or other sequence of characters which reads the same backwar...

Divisible by 3You will be given a string containing digits. You have to say the number of sub strings whose sum is...

MSIS!Do you know what MSIS is? MSIS is the abbreviation for Maximum Sum Increasing Subsequence. It is a s...

Aliens19 February 2020, Unidentified flying object (UFO) has captured student’s attention on top of the CS...

Counting MurgisEver since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th...

Mina and RajuEveryone know about Mina & Raju. They are siblings as well as good friend. The friendcircle of ...

Third DimensionMr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...

A Girl Has No Name“Joffrey… Cersei… Ilyn Payne… the Houn..”  Arya Stark Garden of Bones, Game of Thrones S02E04 Arya ...

Burger KingEvery day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ...

Distinct PermutationsYou are given two binary strings A and B. Recall that binary string is a nonempty sequence of chara...

Shopping is Fun!!Mr. Hikiko passed his Eid without shopping because of ongoing lockdown. Now, Govt. removed the lockd...

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

LIDSWe all know about LIS ( Longest Increasing Sub sequence). The task to find the length of the longest...

Polygon Construction (Hard)Meera in going to picnic with her friends. They are going to have lots of fun. They will be doing va...

Penguins of MadagaskarYou all heard about the Penguins of Madagaskar. They work for the penguin kind and loves cuteness. O...

No GCDYou are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb...
