#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: panjinyan
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/