Tree QueriesYou are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre...

Count the ChaosImagine, you have an array of integers of size N. At each index of this array is a unique integer fr...

CrayonsFive friends A, B, C, D and E has come to a shop to buy crayons for their art project. They need cra...

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

Easy Prime!There are N numbers in an array. You will have Q queries. In each query, you can make 2 operations. ...

Another Query on StringYou are given a string S (of length n) consisting of alphabets only. You need to perform m queries o...

Ajob Commute IIOnce again we return to Ajobshohor, the capital city and the heart of Ajobdesh. Ajobshohor’s road sy...

Rivalry FriendsRyo and his girlfriend love to think about challenges. One day his girlfriend gave him a challenge t...

StraightforwardNo gossip. In this problem I will just say what to do. Initially, you will be given a bracket sequen...

Bored??“Avoid touching your face, particularly your eyes, nose or mouth to prevent the virus from entering ...
