2016年5月6日
Codeforces Round #350 (Div. 2) E. Correct Bracket Sequence Editor 线段树模拟
摘要： E. Correct Bracket Sequence Editor Recently Polycarp started to develop a text editor that works only with correct bracket sequences (abbreviated as C 阅读全文
posted @ 2016-05-06 07:14 meekyan 阅读(355) 评论(0) 推荐(0) 编辑