OJ Board

how ican avoid time limit exit ?any one help me please.......... :oops:

#include<stdio.h>

long int n,i,k=0;
int main()
{

while (1)
{
k=0;
scanf("%d",&n);
if (n==0)
break;
for (i=1;i<=n;i++)
{
if (n%i==0)
k++;
}
if (k%2==0)
printf("no\n");
else
printf("yes\n");
}
return 0;
}