2017年6月26日
Codeforces Round #420 (Div. 2) E. Okabe and El Psy Kongroo DP+矩阵快速幂加速
摘要： E. Okabe and El Psy Kongroo Okabe likes to take walks but knows that spies from the Organization could be anywhere; that's why he wants to know how ma 阅读全文
posted @ 2017-06-26 10:06 meekyan 阅读(424) 评论(0) 推荐(0) 编辑