import java.math.BigInteger;
import java.util.Scanner;

public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		BigInteger N = scan.nextBigInteger();
		BigInteger A = new BigInteger("0");
		if(N.compareTo(A)>0) System.out.println("positive");
		if(N.compareTo(A)==0) System.out.println("zero");
		if(N.compareTo(A)<0) System.out.println("negative");
	}
}