Chen_hsuan的博客

Codeforces Round #602 A. Math Problem 题意： In other words, you need to find a segment [a;b][a;b][a;b], such that [a;b][a;b][a;b] and every [li;ri][li;ri][li;ri] have a common point for each iii, and b...

Educational Codeforces Round 69 (Rated for Div. 2) 欢迎参观！！==> 博客地址 <== 欢迎参观！！ 暑假跑完步会宿舍Div. 2掉分局，开场三道排序题，D题卡到最后乱搞了思路居然AC了。 [你以为你CF过了４题].jpg 结果喜闻乐见的D题被hack掉了，队友同样死亡。 A. DIY Wooden Ladder 给你n个棍子，要求...