#include<cstdio>
#include<string>
#include<iostream>
#include<algorithm>
using namespace std;

int main()
{
	int a, b;
	cin >> a >> b;
	if ((a <= 0 && b >= 0) || (a >= 0 && b <= 0))
	{
		cout << "Zero" << endl;
	}
	else if (a > 0 && b > 0)
	{
		cout << "Positive" << endl;
	}
	else
	{
		int j = a - b;
		if (j % 2 == 0)
			cout << "Negative" << endl;
		else
			cout << "Positive" << endl;
	}
	return 0;
}

