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