随笔分类 - 网络赛
摘要：题目链接：https://nanti.jisuanke.com/t/41389 The value of a string sss is equal to the number of different letters which appear in this string. Your task i
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摘要：B. Light bulbs There are NNN light bulbs indexed from 000 to N−1N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a conti
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摘要：B、Fire-Fighting Hero 图论题-单源最短路径：添加一个顶点，连接各个救火团队所在的救火点，路径长度均设为 0，设该顶点为源，即变成了单源最短路径问题。使用两次Dijkstra算法可求出两个最短路径 的最大值。比较时将救火团队的乘以C进行比较可避免分数操作。 E、Magic Mast
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摘要：A、Maximum Element In A Stack As an ACM-ICPC newbie, Aishah is learning data structures in computer science. She has already known that a stack, as a d
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摘要：F、Greedy Sequence You're given a permutation aa of length nn (1 \le n \le 10^51≤n≤105). For each i \in [1,n]i∈[1,n], construct a sequence s_isi by th
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摘要：Lusrica designs a mosquito coil in a board with n × n grids. The mosquito coil is a series of consecutive grids, each two neighboring grids of which s
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摘要：Chenchen, Tangtang and ZengZeng are starting a game of tic-tac-toe, played on a 3 × 3 board. Initially, all squares on the board are empty and they ta
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摘要：#1636 : Pangu and Stones #1636 : Pangu and Stones 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 In Chinese mythology, Pangu is the first living being and the
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摘要：#1632 : Secret Poems #1632 : Secret Poems 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 The Yongzheng Emperor (13 December 1678 – 8 October 1735), was the fif
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摘要：Cats and Fish 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 There are many homeless cats in PKU campus. They are all happy because the students in the cat clu
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