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

/**************************************************************
	Problem: 1657
	User: tonghuawei
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/