#include <iostream>
#include<stdio.h>
#include<algorithm>
#include<math.h>
#include<stack>
#include<string.h>
#include<queue>
#include<ctype.h>
#include<map>
#include<string>
using namespace std;
int main(){
    int a,b;
    scanf("%d%d",&a,&b);
    if(a<=0&&b>=0){
            printf("Zero\n");
            return 0;
    }
    int c=b-a+1;
    if(c%2==0||a>0)printf("Positive\n");
    else printf("Negative\n");
}
