#include <iostream>
#include <cstdio>
#include <iostream>
#include <cmath>
#include <algorithm>

using namespace std;
int main()
{
   long long a,b;
   cin>>a>>b;
   long long sum=a*b;
   for(long long i=a+1;i<b;i++)
   {
       sum*=i;
   }
   if(sum>0)cout<<"Positive"<<endl;
   else if(sum<0)cout<<"Negative"<<endl;
   else cout<<"Zero"<<endl;
return 0;
}