#include<bits/stdc++.h>
using namespace std ;

int main ()
{
	long long a = 0 , b = 0 ;
	while ( cin >> a >> b )
	{
		if ( a > 0 && b > 0 )	
		{
			 cout << "Positive" << endl ;
		}
		else if ( a <= 0 && b >= 0 )
		{
			cout << "Zero" << endl ;
		}
		else if ( a < 0 && b < 0 ) 
		{
			 if ( ( b - a + 1 ) % 2 == 0 ) 
			 {
			 	 cout << "Positive" << endl ;
		 	 }
			else cout << "Negative" << endl ;
		}
	}
	return 0 ;
}
