Heist传送There was an electronic store heist last night. All keyboards which were in the store yesterday were numbered in ascending order from some inte

Diagonal Walking v.2传送Mikhail walks on a Cartesian plane. He starts at the point(0,0), and in one move he can go to any of eight adjacent points. For

Palindrome Dance传送A group of n dancers rehearses a performance for the closing ceremony. The dancers are arranged in a row, they’ve studied their danc

Equalize传送You are given two binary strings a and b of the same length. You can performthe following two operations on the string a:Swap any two bits a

Reach Median传送You are given an array a of n integers and an integer s. It is guaranteed thatn is odd.In one operation you can either increase or decre