#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,p;
	cin>>a>>b>>c;
	if(86<=a&&86<=b&&86<=c){
		(a+b+c)/3==p;
		if(p>=90){
			cout<<"good";
		}
	}else cout<<"sorry";
	return 0;
} 
/**************************************************************
	Problem: 1657
	User: panjinyan
	Language: C++
	Result: Wrong Answer
****************************************************************/