#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d;
	cin>>a>>b>>c;
	d=(a+b+c)/3;
	if(a>=86&&b>=86&&c>=86&&d>=90)cout<<"good";
	else cout<<"sorry";
	return 0;
}
/**************************************************************
	Problem: 1657
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/