2019年9月16日
B. Light bulbs
摘要： B. Light bulbs There are NNN light bulbs indexed from 000 to N−1N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a conti 阅读全文
posted @ 2019-09-16 19:55 知道了呀~ 阅读(381) 评论(0) 推荐(0)
任意两点之间的最短路（floyed)
摘要： F、Moving On Firdaws and Fatinah are living in a country with nn cities, numbered from 11 to nn. Each city has a risk of kidnapping or robbery. Firdaws 阅读全文
posted @ 2019-09-16 17:03 知道了呀~ 阅读(509) 评论(0) 推荐(0)