2020年9月18日
B-shaass and lights codeForces - 294C
摘要： There are n lights aligned in a row. These lights are numbered 1 to n from left to right. Initially some of the lights are switched on. Shaass wants t 阅读全文
posted @ 2020-09-18 00:20 秘之洋洋 阅读(195) 评论(0) 推荐(0)