MultiplicationSign

public class MultiplicationSign {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double num1 = Double.parseDouble(sc.nextLine());
        double num2 = Double.parseDouble(sc.nextLine());
        double num3 = Double.parseDouble(sc.nextLine());

        double product = num1 * num2 * num3;

        if (product > 0) {
            System.out.println("+");
        }else if (product == 0) {
            System.out.println(0);
        }else System.out.println("-");
    }


    }