2017年11月18日
CF892D—Gluttony（思维，好题）
摘要： http://codeforces.com/contest/892/problem/DD. GluttonyYou are given an array a with n distinct integers. Construct an array b by permuting a such that for every non-empty subset of indices S = {x1, x2... 阅读全文
posted @ 2017-11-18 21:26 Pic 阅读(809) 评论(0) 推荐(0)