#include<bits/stdc++.h>
using namespace std;
int main(){ 
    int a,b,c,n;;
	cin>>a>>b>>c;
	n=(a+b+c)/3; 
	if(n>=90&&a>=86&&b>=86&&c>=86){
		cout<<"good";
	}else{
		cout<<"sorry";
	
	}
}
/**************************************************************
	Problem: 1657
	User: yangjunwen
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/