LOCAL FILE INCLUSION Allows an attacker to read ANY file on the same server. Access files outside www directory. Try to read /etc/passwd file. 1. We k ...
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Web程序 时间:
2020-02-07 22:42:34
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103
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input: 121Output: true ...
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其他好文 时间:
2020-02-06 20:03:07
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83
"vjudge" 下面构造生成函数$F(x)=\sum_{i=0}^{\infty} dp(i)x^i$ 根据递推式,可以列出$F(x)=AxF(x)+BF^2(x)+kx$,然后移项化简后可得$F(x)=\frac{1 Ax\pm\sqrt{(1 Ax)^2 4kBx}}{2B}$.由于没有$dp ...
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其他好文 时间:
2020-02-05 18:07:19
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67
Some times ubuntu user disappeared, need to create the same user again and point to the same home drive, use below command id -u username sudo useradd ...
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系统相关 时间:
2020-02-04 15:35:05
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92
We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we ...
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其他好文 时间:
2020-02-04 10:24:21
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67
For any 4-digit integer except the ones with all the digits being the same, if we sort the digits in non-increasing order first, and then in non-decre ...
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其他好文 时间:
2020-02-02 13:39:18
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58
A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number ...
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其他好文 时间:
2020-02-01 11:00:07
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87
Given a string S, check if the letters can be rearranged so that two characters that are adjacent to each other are not the same. If possible, output ...
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其他好文 时间:
2020-01-31 14:18:49
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60
1、题目 9. Palindrome Number Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example ...
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其他好文 时间:
2020-01-29 17:47:22
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55
题解: 注意每一列与每一列之间互不影响,所以贪心地求出没一列的最小操作值,然后累加起来。 怎么求没一列的最小值呢?维护一个数组same表示其中same[i]=j表示将该序列向上翻滚i次有j个元素归位,那么会有n-j个没有归位,所以我们要修改他们,一共修改n-j次,所以总计n-j+i次。 所以每一列的 ...
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其他好文 时间:
2020-01-28 22:47:54
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53