Justify the Invention ! You probably heard of Professor Meiokoyi, a talented scientist. Recently she invented a new solution... |
Tic Toc Toe We all know what Tic-Toc-Toe works. But in the anime world, people aren't really interested in norma... |
Yet Another Xinversion The problem statement is simple. You are given a rooted tree (1 is the root) and every node has a co... |