Codeforces 1096F - Inversion Expectation

题面给定一个长为     Read more
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Jimmy Zhang Jan 23, 2019

HDUOJ 4947 - GCD Array

题面对于长度为     Read more
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Jimmy Zhang Nov 24, 2018

HDUOJ 5096 - ACM Rank

题面让我们来为某场 ICPC 比赛写一个排名系统吧!ICPC 的规则就不再细讲了吧(逃...     Read more
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Jimmy Zhang Jul 29, 2018

浅谈无旋转 Treap

简介Treap = Tree + Heap。Treap 是一种弱...     Read more
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Jimmy Zhang Jul 28, 2018

HDUOJ 6305 - RMQ Similar Sequence

题面对于序列     Read more
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Jimmy Zhang Jul 26, 2018

第九届“浪潮杯”山东省程序设计竞赛

简介“2018杭电ACM集训队单人排位赛 - 3” 采用了这一套题,然后我成功地...     Read more
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Jimmy Zhang Jul 19, 2018

Codeforces 1000F - One Occurrence

题面现有一个长度为 ...     Read more
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Jimmy Zhang Jul 11, 2018

HDUOJ 4366 - Successor

题面Sean 是一位霸道总裁,在他的公司里有     Read more
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Jimmy Zhang Apr 10, 2018

Codeforces 961E - Tufurama

题面Polycarp 决定二刷他最喜欢的电视剧 Tufurama,但是当他搜索这个电视剧的时候发现如果第     Read more
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Jimmy Zhang Apr 06, 2018

POJ 1990 - MooFest

题面Farmer John 的     Read more
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Jimmy Zhang Apr 01, 2018