#include <bits/stdc++.h>
using namespace std;
long long a, b, x = 1;
int main () {
	cin >> a >> b;
	for(int i = a; i <= b; i++) {
		x += x * i;
		
	}
	if(x == 0) {
		cout << "Zero";
	}
	else if(x > 0) {
		cout << "Positive";
	}
	else if(x < 0) {
		cout << "Negative";
	}
}