import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		if(a > 0){
			System.out.println("+");
		}else if(a < 0){
			System.out.println("-");
		}
		sc.close();
	}

}
/**************************************************************
	Problem: 1645
	User: admin
	Language: Java
	Result: Accepted
	Time:744 ms
	Memory:39916 kb
****************************************************************/