Codeforces Round #246 (Div. 2)

Return posted @ May 18, 2014 08:59:48 PM in OI with tags Virtual participation 蒟蒻 , 3035 阅读

第一次打Codeforces的vp。。

毕竟人太弱

Choosing Teams :十足逗比题,连语文题都算不上。搞搞就过了= =。

这都要贴代码?

Football Kit  :鸣谢 Dccxx

Prime Swaps :题目大概就是给你一个数组,让你交换其中的一对使得他们有序,但是对于交换的元素Ai, Aj,必须满足(j-i+1)为质数

大概就是把每个数应该到的地方求出来,然后不停的贪心swap离它最近的满足性质的位置,应该可以预处理出来,但我burn了个可爱的写法,然后就爆了一发OJ,原来是数组开小了。哈哈、

 

这都要贴代码?

Prefixes and Suffixes :鸣谢 Dccxx

Square Tiling :给你一个n*m的矩形,让你填充正方形,然后让方案的字典序最小,每次放最大的正方形就可以了,线节问题在良心的样例之下,burn掉了、

这都要贴代码?

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