#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b;
	cin>>a>>b;
	if(a>0){
		cout<<"Positive";
		return 0;
	}
	if(a<=0&&b>=0){
		cout<<"Zero";
		return 0;
	}
	if((min(b,-1)-a)%2==1){
		cout<<"Positive";
		return 0;
	}
	cout<<"Negative";
} 