POJ 1597 Uniform Generator

#include<iostream>
#include<cstdio>
#include<memory.h>
using namespace std;
__int64 gcd(__int64 a,__int64 b)
{
if(b==0)
return a;
else
return gcd(b,a%b);
}
int main()
{
__int64 a,b,d;
while(scanf("%I64d%I64d",&a,&b)!=EOF)
{
d=gcd(a,b);
printf("%10I64d%10I64d    ",a,b);
if(d!=1)
printf("Bad Choice/n");
else
printf("Good Choice/n");
printf("/n");
}
return 0;
}