题目 Write a program that takes as input a rooted tree and a list of pairs of vertices. For each pair (u,v) the program determines the closest common an ...
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其他好文 时间：
2019-08-02 10:45:01
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77
The multiplication puzzle is played with a row of cards, each containing a single positive integer. During the move player takes one card out of the r ...
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其他好文 时间：
2019-07-31 16:39:23
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106
题目链接： "luogu5171" 这玩意在bzoj上是个权限题 统计$ax+by\leq c$的非负正整数解，考虑将原式变形成$y\leq\frac{ ax+c}{b}$ 我们枚举$x$可以得到最后的答案就是$\sum_{x=0}^{\lfloor\frac{c}{a}\rfloor}(\frac ...
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其他好文 时间：
2019-06-17 01:18:51
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126
链接：https://ac.nowcoder.com/acm/contest/908/F 题意： AFei has many cards. Each card has a number written on it. Now he wants to takes some out of his card ...
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其他好文 时间：
2019-06-01 19:10:08
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103
which 1.说明:shows the full path of (shell) commands;Which takes one or more arguments意思是该命令用于显示命令所在包括shell命令的绝对路径,并且该命令至少需要一个参数 默认在/usr/local/sbin:/usr ...
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系统相关 时间：
2019-05-12 15:20:12
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173
Asking you to implement the Math.pow method The navie implemenation can be: It takes O(N) time. Now if we want to improve it to O(logN) time. we can d ...
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其他好文 时间：
2019-04-29 22:32:47
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146
在使用python多线程module Threading时: 运行时报如上的错误，参考stackoverflow，如下解释: 正确的传递方式如下： ...
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编程语言 时间：
2019-04-26 15:01:42
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173
46 Simple Python Exercises-Very simple exercises 4、Write a function that takes a character (i.e. a string of length 1) and returns True if it is a vow ...
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编程语言 时间：
2019-04-19 18:05:55
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132
描述 Write a function that takes an unsigned integer and return the number of '1' bits it has (also known as the Hamming weight). 输入是一个无符号整数，返回其二进制表达式中数 ...
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其他好文 时间：
2019-04-12 16:24:36
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140
Description: You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct wa ...
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编程语言 时间：
2019-04-09 20:39:21
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213
