#include <stdio.h>
#include <stdlib.h>

int soma(unsigned int n)
{
    int i, soma=0;
    for(i=1;i<n;i++)
    {
        if(n%i==0)
        {
            soma += i;
        }
    }
    return soma;
}
int amigos(unsigned int n1, unsigned int n2)
{
    if ((n1==soma(n2))&&(n2==soma(n1))&&(n1!=n2))
        return 1;
    else
        return 0;
}

int main()
{
    unsigned n, n1, n2;
    printf("Entre com um numero: ");
    scanf("%d", &n);
    for(n1=0;n1<=n;n1++)
    {
        for(n2=0;n2<=n;n2++)
        {
            if(amigos(n1,n2)==1)
                printf("%d e %d\n", n1,n2);
        }
    }
    return 0;
}