#include <iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;
int main()
{
	long long a,b;
	cin>>a>>b;
	if((a<0&&b>0)||(a==0)||b==0)
	cout<<"ZERO"<<endl;
	 else if((b-a+1)%2==0||(a>0)&&(b>0)) 
	cout<<"Positive"<<endl;
	else cout<<"Negative"<<endl;
	return 0;
}