Description An array of positive integers a1, a2, ..., an is given. Let us consider its arbitrary subarray al, al + 1..., ar, where 1 ≤ l ≤ r ≤ n. For every positive inte...
2023-03-15编程教程Codeforces,分块,暴力E. Holes Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/13/problem/E Description Little Petya likes to play a lot. Most of all he likes to play a game «Holes&r...
2023-03-15编程教程Codeforces,分块,暴力