include <iostream>
#include <stdio.h>
#include <iomanip>
#include <math.h>
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;