#include <bits/stdc++.h> using namespace std;

int main; { int n; cin >> n;

if (n > 0 )
{
    cout << "postive" << endl;
}
else if(n < 0 )
{
    cout << "negative" << endl; 
}
else(n = 0 )
{
	cout<<"zero"<<endl;
}
return 0

}