adnan_toky

Adnan is going to organize a chess tournament. He has invited n players to participate. Each pair of...

Do you remember Alice and Bob? They are fighting for glory in a battle game they’ve just bought. The...

The country FurfuriNagar is famous for the cartoon series Motu Patlu. The peace and furfuriness of t...

You have a sequence a1​, a2​, a3​, …, an​ of n integers and q queries. In each query, you are given ...

Alice and Bob are playing a game on a string s of length n consisting of characters ‘0’ and ‘1’. The...

Efa has received an array a1​,a2​,a3​,…an​ of n integers as her birthday gift. Her younger sister Ta...

There are n cities numbered from 1 to n in a country. Two consecutive cities are connected by a bidi...

Efa loves numbers. She thinks a number is powerful if it can be expressed in the form xy where x and...

Efa hates numbers. But she loves the XOR operation. This time, you have to solve another problem for...