#include <bits/stdc++.h>

using namespace std;

int main() {
    //cin读入优化
    std::ios::sync_with_stdio(false);
    long long N;
    cin>>N;
    if(N>0) cout<<"positive"<<endl;
    else if(N==0) cout<<"zero"<<endl;
    else if(N<0) cout<<"negative"<<endl;
    return 0;
}