#include <iostream>
#include <iomanip>
 
int main()
{
	int i = 0;
 
	switch(i){
	i++;
	case 0: i++; break;
	default:;
	}
 
	std::cout << i << std::endl;
 
	return 0;
}
 
				I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8aW9tYW5pcD4KCmludCBtYWluKCkKewoJaW50IGkgPSAwOwoKCXN3aXRjaChpKXsKCWkrKzsKCWNhc2UgMDogaSsrOyBicmVhazsKCWRlZmF1bHQ6OwoJfQoKCXN0ZDo6Y291dCA8PCBpIDw8IHN0ZDo6ZW5kbDsKCglyZXR1cm4gMDsKfQo=