View Code of Problem 93

#include<stdio.h>
int ysum(int x)
{
	int i,sum=0;
	for(i=1;i<x;i++)
	{
		if(x%i==0)
		  sum+=i;
	}
	return sum;
}
int main()
{
	int m,n,b,a;
	scanf("%d %d",&m,&n);
	int i,j;
	for(i=m;i<=n;i++)
	{
		a = ysum(i);//i因子和 ==a 秩序求出a因子和和i比较 
		b = ysum(a);
		if(b==i&&i<a)
		{
			printf("%d %d\n",i,a);
		}
	}
	return 0;
}