摘要：
codeforces 1185G1. Playlist for Polycarp (easy version)（动态规划） 传送门：https://codeforces.com/contest/1185/problem/G1 题意： 你从学校回到家要T的时间，你现在有n首歌，每首歌的播放时间为ti, 阅读全文
摘要：
Splay模板 1.区间翻转（洛谷p3391） c++ include include include include include include include include include include include include include include include us 阅读全文