#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: sucongyi
	Language: C++
	Result: Accepted
	Time:25 ms
	Memory:2072 kb
****************************************************************/