xuanweiace的博客

题干： 链接：https://ac.nowcoder.com/acm/contest/370/E 来源：牛客网   Rinne 喜欢礼物，也喜欢送礼物 圣诞节快到了，Rinne 要去给给住在城市里的人送礼物 城市的交通可以抽象成一个 n 个点 m 条边的有向图 每条边上有 didi 个居民，Rinne 经过这条边的时候就会给她们每个人都送礼物 由于 Rinne 的礼物并不是很多，她只在城市平均...

题干： In a certain course, you take n tests. If you get ai out of bi questions correct on test i, your cumulative average is defined to be . Given your test scores and a positive integer k, determine...

题干： David the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village. Villages which a...