//---------------------------------------------------------------------------

#include<stdio.h>

#define HIGH 10000

#define LOW 6

int p(int a) /*寻找a的亲密数，找到则返回该亲密数，否则返回-1*/

{

int i;

int suma=0,sumb=0;

for (i=1; i < a; i++) {

suma+=(a%i)?0:i;

}

for (i=1; i<suma; i++) {

sumb+=(suma%i)?0:i;

}

return (a==sumb&&a!=suma)?suma:-1;

}

int main(void)

{

int a=LOW,b;

while (a<HIGH)

if ((b=p(a++))!=-1&&a<b) {

printf(<%d,%d>\n,a-1,b);

}

return 0;

}

//---------------------------------------------------------------------------