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链接：https://ac.nowcoder.com/acm/contest/11254/E 来源：牛客网 题目描述 Given n, count the number of pairs of positive integers (x, y), such that xy+1∣x2+y2,1≤x≤y≤ 阅读全文
posted @ 2021-07-25 00:23
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链接：https://ac.nowcoder.com/acm/contest/11254/J 来源：牛客网 题目描述 Goodeat finds an undirected complete graph with n vertices. Each edge of the graph is paint 阅读全文
posted @ 2021-07-24 19:07
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Problem Description Give you a cube with a side length of n-1. Find the number of equilateral triangles with three points on the cube point. Each side 阅读全文
posted @ 2021-07-23 10:42
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题目描述 给定一棵nn个点的带权树，结点下标从11开始到NN。寻找树中找两个结点，求最长的异或路径。 异或路径指的是指两个结点之间唯一路径上的所有边权的异或。 输入格式 第一行一个整数NN，表示点数。 接下来 n−1n−1 行，给出 u,v,wu,v,w ，分别表示树上的 uu 点和 vv 点有连边 阅读全文
posted @ 2021-07-22 00:40
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Problem Description Given a sequence of integers of length n, find the shortest consecutive subsequence witch XOR sum not less than k. If there are mu 阅读全文
posted @ 2021-07-21 16:22
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Problem Description Let’s call a weighted connected undirected graph of n vertices and m edges KD-Graph, if the following conditions fulfill: * n vert 阅读全文
posted @ 2021-07-20 21:01
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Problem Description Given n-1 points, numbered from 2 to n, the edge weight between the two points a and b is lcm(a, b). Please find the minimum spann 阅读全文
posted @ 2021-07-20 18:36
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Problem Description Given a matrix of n rows and m columns,find the largest area submatrix which is non decreasing on each column Input The first line 阅读全文
posted @ 2021-07-20 18:29
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链接：https://ac.nowcoder.com/acm/contest/11253/K 来源：牛客网 题目描述 ZYT had a magic permutation a1,a2,⋯ ,ana1,a2,⋯,an, and he constructed a sequence b1,b2,⋯bnb 阅读全文
posted @ 2021-07-20 10:53
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链接：https://ac.nowcoder.com/acm/contest/11253/F 来源：牛客网 题目描述 ZYT and ZFeT are great PUAs and both have two girlfriends,but they never think that their g 阅读全文
posted @ 2021-07-19 17:14
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