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();
		int b = sc.nextInt();
		int c = sc.nextInt();
		double s = (double)((a + b + c) / 3);
		if(s>=90 && a>=86 && b>=86 && c>=86){
			System.out.println("good");
		}else{
			System.out.println("sorry");
		}
		sc.close();
	}

}
/**************************************************************
	Problem: 1657
	User: admin
	Language: Java
	Result: Accepted
	Time:1071 ms
	Memory:39984 kb
****************************************************************/