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

int main() {
    int a,b; scanf("%d %d", &a, &b);

    if (a <= 0 && 0 <= b) {
        printf("Zero\n");
    } else if (b < 0 && (b-a+1) % 2 == 1) {
        printf("Negative\n");
    } else {
        printf("Positive\n");
    }

    return 0;
}
