There are N coins kept on the table, numbered from 0 to N – 1. Initially, each coin is kept tails up. You have to perform two types of operations

Problem Statement A positive integer is called a palindrome if its representation in the decimal system is the same when read from left to right and from right to left. For a…

Problem Statement Rohit dreams he is in a shop with an infinite amount of marbles. He is allowed to select n marbles. There are marbles of k different colors. From…

Problem Statement Little kids, Jack and Evan like playing their favorite game Glass-and-Stone. Today they want to play something new and came across Twitter on their father’s laptop. They saw…

Problem Statement In Byteland they have a very strange monetary system. Each Bytelandian gold coin has an integer number written on it. A coin n can be exchanged in a…