HDOJ-2012 素数判定

#include <iostream>
using namespace std;
int main ()
{
int x,y,s;
while (cin>>x>>y )
{
if ((x==0 && y==0) || (x<-39 || y>50 || x>=y))
return 0;
else
{
int n,m=0;
for (n=x;n<=y;n++)
{
s=n*n+n+41;
for (int b=2;b*b<=s;b++)
if (s%b==0)
{
m++;
cout <<"Sorry"<<endl;
}
if (m!=0)
break;
}
if (m==0)
cout <<"OK"<<endl;
}
}
return 0;
}