#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d;
	cin>>a>>b>>c;
	d=(a+b+c)/3;
	if(d>=90&&a>=86&&b>=86&&c>=86){
		cout<<"good";
	}else cout<<"sorry";
}

/**************************************************************
	Problem: 1657
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/