Codeforces 1088C - Ehab and a 2-operation task - 思维
Codeforces 1088C - Ehab and a 2-operation task题解链接https://lucien.ink题目链接https://codeforces.com/contest/1088/problem/C题目You're given an array $a$ of length $n$. You can perform the following operati...