#include <iostream>
#include <stdio.h>
using namespace std;

int main()
{
    int a,b,num;
    while(~scanf("%d%d",&a,&b))
    {
        if (a*b<=0) printf("Zero\n");
        else if (a>0) printf("Positive\n");
        else if (a<0)
        {
            num=b-a+1;
            if (num%2==0) printf("Positive\n");
            else printf("Negative\n");
        }

    }
    return 0;
}
