#include <iostream>
using namespace std;
int main()
{
int N;
cin>>N;
if(N>0)cout<<"positive";
if(N==0)cout<<"zero";
if(N<0)cout<<"negative";
return 0;
}
using namespace std;
int main()
{
int N;
cin>>N;
if(N>0)cout<<"positive";
if(N==0)cout<<"zero";
if(N<0)cout<<"negative";
return 0;
}