hdu 1406 完数

Problem Description

完数的定义：如果一个大于1的正整数的所有因子之和等于它的本身，则称这个数是完数，比如6，28都是完数：6=1+2+3；28=1+2+4+7+14。

本题的任务是判断两个正整数之间完数的个数。

 

 

Input

输入数据包含多行，第一行是一个正整数n，表示测试实例的个数，然后就是n个测试实例，每个实例占一行，由两个正整数num1和num2组成,(1<num1,num2<10000) 。

 

 

Output

对于每组测试数据，请输出num1和num2之间（包括num1和num2）存在的完数个数。

 

 

Sample Input

2 2 5 5 7

 

 

Sample Output

0 1

 //先要打表而已

 

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;


int main()
{
    int 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0,0,0,0,0,0};
    int n,m,c,ans;
    cin>>c;
    while(c--)
    {
        ans=0;
        cin>>n>>m;
        if(n>m)
        {
            int tmp;
            tmp=m;m=n;n=tmp;
        }
        for(int i=n;i<=m;i++)
        {
            if(ins[i]==1)
            ans++;
        }
        cout<<ans<<endl;
    }
    return 0;
}