#include<bits/stdc++.h>
using namespace std;
int main(){
	float a,b,c;
	cin>>a>>b>>c;
	if((a+b+c)/3.0>=90&&a>=86&&b>=86&&c>=86){
		cout<<"good";
	}else{
		cout<<"sorry";
	}
}
 
/**************************************************************
	Problem: 1657
	User: linzihang
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/