#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long a,b,sum=0,t1;
	cin>>a>>b;
	if(b>0&&a>0)cout<<"Positive"<<endl;	
	if(b>=0&&a<=0)cout<<"Zero"<<endl;
	if(b<0&&a<0)
	{
		if((b-a+1)%2==0)cout<<"Positive"<<endl;
		else cout<< "Negative"<<endl;
	}	
	
	return 0;
}