BAPGRussell loves solving math problems and also playing online games. Recently, he has started playing ...

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...

Binary PigeonsThere are N pigeons standing one after another in a straight line. There are two kinds of pigeons: w...

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...

Diagonal SumGiven an N*N size matrix, you have to rearrange the elements of the matrix in such a way that the d...

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

Who Ate the Pizza Slices?Misty’s life is very dramatic. No matter how careful she is, some interesting and sometimes unfortun...

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...

Permutations and DivisorsLet P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o...

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...

PasswordsAlice wants to extract some passwords from a random string. A password can have any number of charac...
