#include <iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<algorithm>
using namespace std;


int main()
{
    long long int a,b;
    while(scanf("%lld %lld",&a,&b)!=EOF)
    {
        if(a<0)
        {
            if(b>=0)
                printf("Zero\n");
            else if((b-a)%2==0)
                printf("Negative\n");
            else
                printf("Positive\n");
        }
        else if(a==0)
            printf("Zero\n");
        else
            printf("Positive\n");
    }

}
