2019年10月25日
[Codeforces] MultiSet
摘要： Consider a multiset of integers S, the union of n closed intervals of positive integers: S = [l1..r1] ∪ [l2..r2] ∪ · · · ∪ [ln..rn](recall that a clos 阅读全文
posted @ 2019-10-25 05:55 Review->Improve 阅读(248) 评论(0) 推荐(0)
[Codeforces] Too Many Segments
摘要： Smaller input size: https://codeforces.com/contest/1249/problem/D1 Big input size: https://codeforces.com/contest/1249/problem/D2 Given n segments on 阅读全文
posted @ 2019-10-25 04:56 Review->Improve 阅读(589) 评论(0) 推荐(0)
[Daily Coding Problem 331] Minimum Flips to make XY string
摘要： You are given a string consisting of the letters x and y, such as xyxxxyxyy. In addition, you have an operation called flip, which changes a single x  阅读全文
posted @ 2019-10-25 00:48 Review->Improve 阅读(1304) 评论(0) 推荐(0)