Game improvement of smart people: Chapter 3 Lesson 3: find game

#include <cstdio>
using namespace std;
int main()
{
	int p,q,i,k=0;
	scanf ("%d%d",&p,&q);
	for (i=1;p>0&&q>0;i++)
	{ 
		if(p%2==1&&q%2==1)
		{
			k++; 
			printf ("%d ",i);
		}
		p/=2;
		q/=2;
	}
	if(k==0)
		printf ("0\nClose"); 
	else if(k>=2)
		printf ("\nOpen");
	else
		printf ("\nClose");
	return 0;
}