Difference Operations Solution Codeforces

Difference Operations Solution Codeforces You are given an array aa consisting of nn positive integers. You are allowed to perform this operation any number of times (possibly, zero): choose an index ii (2≤i≤n2≤i≤n), and change aiai to ai−ai−1ai−ai−1. Is it possible to make ai=0ai=0 for all 2≤i≤n2≤i≤n? Input Difference Operations Solution Codeforces The input consists of multiple test cases. The first line contains a single integer tt (1≤t≤1001≤t≤100)  — … Read more