#include <iostream> 
using namespace std ;
int main () {
	int n ;
	while (cin >> n) {
		if (n>0) {
			cout << "1" << endl ; 
		}
		else if (n==0) {
			cout << "0" << endl ;
		}
		else {
			cout << "-1" << endl ;
		}
	}
	return 0 ;
}