F. Three Paths on a Tree Description You are given an unweighted tree with nn vertices. Recall that a tree is a connected undirected graph without cyc ...
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其他好文 时间:
2020-02-13 09:54:10
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72
问题描述: Calculate a+b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are le ...
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其他好文 时间:
2020-02-12 10:51:16
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65
题目链接 Dima loves representing an odd number as the sum of multiple primes, and Lisa loves it when there are at most three primes. Help them to represen ...
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其他好文 时间:
2020-02-12 00:29:05
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85
Calculate a+b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less tha ...
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其他好文 时间:
2020-02-11 19:26:40
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79
F. Three Paths on a Tree 思路 两种方法: 1.两次bfs求树的直径,顺便求出一个直径端点到所有点的最短距离;再bfs一次,求另一个直径上的端点到其它所有点的最短距离;之后枚举第三个端点(不等于端点1和端点2),dis(a,b) + dis(b,c) + dis(a,c) 再 ...
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其他好文 时间:
2020-02-11 12:01:45
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53
题目来源 Given three integers A, B and C in [?], you are supposed to tell whether A+B>C. Input Specification: The first line of the input gives the positi ...
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编程语言 时间:
2020-02-05 21:51:51
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72
接着前面的《 "tox 教程" 》,以及刚翻译好的《 "nox文档" 》,我们继续聊聊 Python 任务自动化的话题。 nox 的作者在去年的 Pycon US 上,做了一场题为《 "Break the Cycle: Three excellent Python tools to automate ...
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编程语言 时间:
2020-02-05 20:25:24
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99
From: University of Maryland encode time series as different types of images. reformulate features of time series as visual clues. three representatio ...
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其他好文 时间:
2020-02-05 10:00:43
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79
You are given a string representing an attendance record for a student. The record only contains the following three characters: 'A' : Absent. 'L' : L ...
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其他好文 时间:
2020-02-05 09:48:50
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45
F. Three Paths on a Tree 原题链接:https://codeforces.com/contest/1294/problem/F 题目大意: 给定一棵树,选出三点,使三点连成的j简单路径最大。简而言之,三个点连成的边的集合大小。 解题思路: 假设任取一点为三点连线的公共点,最长 ...
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其他好文 时间:
2020-02-03 15:25:01
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66