Codeforces Round #198 (Div. 2) E. Iahub and Permutations —— 容斥原理
摘要：
题目链接：http://codeforces.com/contest/340/problem/E E. Iahub and Permutations time limit per test 1 second memory limit per test 256 megabytes input stan 阅读全文
posted @ 2017-06-16 21:02 h_z_cong 阅读(258) 评论(0) 推荐(0) 编辑
