2018年3月23日
Educational Codeforces Round 40 (Rated for Div. 2)
摘要： A. Diagonal Walking Mikhail walks on a 2D plane. He can go either up or right. You are given a sequence of Mikhail's moves. He thinks that this sequen 阅读全文
posted @ 2018-03-23 11:34 天之道，利而不害 阅读(335) 评论(0) 推荐(0) 编辑