#include <bits/stdc++.h>

using namespace std;

int main()
{
    int a,b;
    cin>>a>>b;
    if(a>0&&b>0||a<0&&b<0&&(b-a+1)%2==0)
    {
        cout<<"Positive"<<endl;
    }
    else if(a<0&&b>0||a>0&&b<0||a<0&&b<0&&(b-a+1)%2!=0)
    {
        cout<<"Negative"<<endl;
    }
    else cout<<"Zero"<<endl;
    return 0;
}
