Description Berland has n cities connected by m bidirectional roads. No road connects a city to itself, and each pair of cities is connected by no mor ...
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其他好文 时间：
2017-08-02 16:01:55
阅读次数：
195
先把问题放在后缀数组上考虑 已知两个数组a b，求min(a[i],...,a[j])+(b[i]^b[j])的最大值 套路题 初始每个点都是一个小连通块 把a按从大到小的顺序加入，计算当前加入边作为min的贡献： 每次加入会把两个连通块联通，答案就是两边连通块各出一个数能得到的异或和最大值 我：这 ...
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编程语言 时间：
2017-08-02 11:54:00
阅读次数：
286
题目描述 In a village called Byteville, there are houses connected with N-1 roads. For each pair of houses, there is a unique way to get from one to anoth ...
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其他好文 时间：
2017-08-02 09:58:19
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138
Prime Distance Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 18731 Accepted: 5006 Description The branch of mathematics called number the ...
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其他好文 时间：
2017-08-02 00:41:49
阅读次数：
160
题目连接： http://codeforces.com/gym/100269/attachments Description Little Vasya is playing a new game named “Dwarf Tower”. In this game there are n differ ...
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其他好文 时间：
2017-08-02 00:25:10
阅读次数：
161
kb=千碱基 kilobase nt＝核苷酸 nucleotide bp＝碱基对 base pair kb=千碱基 kilobase nt＝核苷酸 nucleotide bp＝碱基对 base pair 高通量测序 高通量测序技术（High-throughput sequencing，HTS），有些 ...
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其他好文 时间：
2017-08-01 23:15:18
阅读次数：
250
Intersecting Lines Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 16311 Accepted: 7040 Description We all know that a pair of distinct poi ...
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其他好文 时间：
2017-08-01 22:55:58
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164
Description We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three wa ...
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其他好文 时间：
2017-08-01 12:35:50
阅读次数：
212
题目： Equations are given in the format A / B = k, where A and B are variables represented as strings, and k is a real number (floating point number). G ...
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编程语言 时间：
2017-07-31 15:50:46
阅读次数：
163
