题解 | #挂科危险#

import java.util.Scanner;
public class Main {
    
    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        int score = sc.nextInt();
        if(score >= 10) {
            System.out.println("Danger++");
        } else if(score >= 4 && score <= 9) {
            System.out.println("Danger");
        } else {
            System.out.println("Good");
        }
    }
}