2017年2月3日

E - An Awful Problem 求两段时间内满足条件的天数//lxm
摘要： In order to encourage Hiqivenfin to study math, his mother gave him a sweet candy when the day of the month was a prime number. Hiqivenfin was happy w 阅读全文
posted @ 2017-02-03 15:55 Annetree 阅读(258) 评论(0) 推荐(0) 编辑
 
K - Strange Country II 暴力dfs判断有向图是否连通//lxm
摘要： You want to visit a strange country. There are n cities in the country. Cities are numbered from 1 to n. The unique way to travel in the country is ta 阅读全文
posted @ 2017-02-03 15:51 Annetree 阅读(237) 评论(0) 推荐(0) 编辑