随笔分类 -  ICPC

B. Light bulbs（2019 ICPC上海站）
摘要：There are NN light bulbs indexed from 00 to N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulb 阅读全文
posted @ 2019-09-25 17:17 sqsq 阅读(345) 评论(0) 推荐(1)