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题目描述 小B 有一个长为 nn 的整数序列 aa，值域为 [1,k][1,k]。 他一共有 mm 个询问，每个询问给定一个区间 [l,r][l,r]，求： ∑i=1kci2i=1∑kci2 其中 cic**i 表示数字 ii 在 [l,r][l,r] 中的出现次数。 小B请你帮助他回答询问。 输入 阅读全文
posted @ 2021-08-02 02:21
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题目描述 Petr likes to come up with problems about randomly generated data. This time problem is about random permutation. He decided to generate a random 阅读全文
posted @ 2021-08-01 20:51
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题目描述 HH 有一串由各种漂亮的贝壳组成的项链。HH 相信不同的贝壳会带来好运，所以每次散步完后，他都会随意取出一段贝壳，思考它们所表达的含义。HH 不断地收集新的贝壳，因此，他的项链变得越来越长。 有一天，他突然提出了一个问题：某一段贝壳中，包含了多少种不同的贝壳？这个问题很难回答…… 因为项链 阅读全文
posted @ 2021-08-01 18:33
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链接：https://ac.nowcoder.com/acm/contest/11256/B 来源：牛客网 题目描述 There're nn boxes in front of you. You know that each box contains a ball either in white o 阅读全文
posted @ 2021-08-01 13:04
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链接：https://ac.nowcoder.com/acm/contest/11256/K 来源：牛客网 题目描述 Given nn integers a1,a2,⋯ ,ana1,a2,⋯,an and mm queries. For each query, you are given a con 阅读全文
posted @ 2021-08-01 02:21
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Problem Description One day, a zombie came to the Lawn of the Dead, which can be seen as an n×m grid. Initially, he stood on the top-left cell, which 阅读全文
posted @ 2021-07-30 21:55
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A You are given 𝑛n integers 𝑎1,𝑎2,…,𝑎𝑛a1,a2,…,an. Find the maximum value of 𝑚𝑎𝑥(𝑎𝑙,𝑎𝑙+1,…,𝑎𝑟)⋅𝑚𝑖𝑛(𝑎𝑙,𝑎𝑙+1,…,𝑎𝑟)max(a 阅读全文
posted @ 2021-07-30 12:46
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Problem Description Little Rabbit is a college student who is studying Communication Engineering. In this term, he has a course called Digital Image P 阅读全文
posted @ 2021-07-29 17:41
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Problem Description Kanade is designing a mini-game. It's a puzzle game that orders players to get out of a maze. Players should also collect as many 阅读全文
posted @ 2021-07-29 17:29
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Problem Description This summer, ZXyang became so tired when doing the problems of Multi-University contests. So he decided to attend the Unified Nati 阅读全文
posted @ 2021-07-29 17:13
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