/*Little Petya often travels to his grandmother in the countryside. The grandmother has a large garden, which can be represented as a rectangle 1 × n in size, when viewed from above. This rectangle is ...

Problem 792 A. New Bus Route: https://codeforces.com/problemset/problem/792/A Problem 801 A. Vicious Keyboard: https://codeforces.com/problemset/problem/801/A Problem ...