Uva 11728 - Alternate Task 题目链接 题意:给定一个因子和.求出相应是哪个数字 思路:数字不可能大于因子和,对于每一个数字去算出因子和,然后记录下来就可以 代码: #include <stdio.h> #include <string.h> const int N = 1005; int n, ans[N]; void init() { memset(ans, -1, sizeof(ans)); for (int i = 1; i <= 1000;…
Little Hasan loves to play number games with his friends. One day they were playing a game whereone of them will speak out a positive number and the others have to tell the sum of its factors. Thefirst one to say it correctly wins. After a while they…
题意:给定一个 n,求一个最大正整数 N 使得 N 的所有正因数和等于 n. 析:对于任何数一个 n,它的所有正因子都是大于等于本身的,因为 n 本身就是自己的正因数,这样的就可以直接暴力了,答案肯定是在 1 ~ n 范围内. 代码如下: #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <string> #include <cstdlib&…
Three Families Three families share a garden. They usually clean the garden together at the end of each week, but last week, family C was on holiday, so family A spent 5 hours, family B spent 4 hours and had everything done. After coming back, fam…
The first place of 2^n Problem Description LMY and YY are mathematics and number theory lovers. They like to find and solve interesting mathematic problems together. One day LMY calculates 2n one by one, n=0, 1, 2,- and writes the results on a sheet…
There is a war and it doesn't look very promising for your country. Now it's time to act. You have a commando squad at your disposal and planning an ambush on an important enemy camp located nearby. You have N soldiers in your squad. In your master-p…
