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三元组 给定 $n$ 个两两不同的正整数 $a_1,a_2, \dots ,a_n$。 请你计算共有多少个三元组 $(i,j,k)$ 能够同时满足： $i<j<k$ $a_i>a_j>a_k$ 输入格式 第一行包含整数 $n$。 第二行包含 $n$ 个整数 $a_1,a_2, \dots ,a_n$ 阅读全文
posted @ 2022-10-23 09:49
onlyblues
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D. Problem with Random Tests You are given a string $s$ consisting of $n$ characters. Each character of $s$ is either $0$ or $1$. A substring of $s$ i 阅读全文
posted @ 2022-10-22 10:19
onlyblues
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C. Save the Magazines Monocarp has been collecting rare magazines for quite a while, and now he has decided to sell them. He distributed the magazines 阅读全文
posted @ 2022-10-21 23:20
onlyblues
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E2. Divisible Numbers (hard version) This is an hard version of the problem. The only difference between an easy and a hard version is the constraints 阅读全文
posted @ 2022-10-19 20:12
onlyblues
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E1. Divisible Numbers (easy version) This is an easy version of the problem. The only difference between an easy and a hard version is the constraints 阅读全文
posted @ 2022-10-19 19:37
onlyblues
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Count Subarrays With Fixed Bounds You are given an integer array nums and two integers minK and maxK . A fixed-bound subarray of nums is a subarray th 阅读全文
posted @ 2022-10-16 16:58
onlyblues
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Minimize Maximum of Array You are given a 0-indexed array nums comprising of $n$ non-negative integers. In one operation, you must: Choose an integer 阅读全文
posted @ 2022-10-16 15:13
onlyblues
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最短路程 给定一个 $n$ 个节点的树。 节点编号为 $1 \sim n$。 树中所有边均为双向边，且长度均已知。 你需要从 $1$ 号点出发，沿着一条路径遍历树中所有点，路径中可以包含重复的点和边。 要求，你的行程总长度应尽可能短。 请你计算，你所需的行程总长度的最小可能值。 注意，你可以在任意点 阅读全文
posted @ 2022-10-16 11:48
onlyblues
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F. Multi-Colored Segments Dmitry has $n$ segments of different colors on the coordinate axis $Ox$. Each segment is characterized by three integers $l_ 阅读全文
posted @ 2022-10-15 19:52
onlyblues
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E. Sending a Sequence Over the Network The sequence $a$ is sent over the network as follows: sequence $a$ is split into segments (each element of the 阅读全文
posted @ 2022-10-13 12:01
onlyblues
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