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

int main( )
{
    int a, b, i;
    while( scanf("%d %d", &a, &b) != EOF )
    {
        int k = 0, flag = 0;
        for( i = a; i <= b; i++ )
        {
            if( i < 0 )
                k++;
            if( i == 0)
            {
                flag = 1;
                break;
            }
        }
        if( flag == 1 )
            printf("Zero\n");
        else if( k % 2 == 0)
            printf("Positive\n");
        else printf("Negative\n");
    }
    return 0;
}
