#include <stdio.h>
#include <stdlib.h>

int main()
{
    double a,b;
    while(~scanf("%lf%lf",&a,&b))
    {
        double sum=1;
        for(;a<=b;a++)
        {
            sum*=a;
            if(sum==0)
                break;
        }
        if(sum==0)
            printf("Zero\n");
        else if(sum>0)
            printf("Positive\n");
        else
            printf("Negative\n");


    }

    return 0;
}
