#include<bits/stdc++.h>
using namespace std;
int main() {
	int a,b,c;
	cin>>a>>b>>c;
	if((a+b+c)/3>=90&&a>86&&b>86&&c>86){
		cout<<"good";
	}else{
		cout<<"sorry";
	}
	
}
	
/**************************************************************
	Problem: 1657
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/