#include<bits/stdc++.h>
using namespace std;
int main()
{
    double a,b,c;
    cin>>a>>b>>c;
    if (a>85&&b>85&&c>85&&(a+b+c)/3>=90)
        cout<<"good";
    else
        cout<<"sorry";
    return 0;
}

if((a + b + c) / 3 >= 90)
    {
        if(a >= 86 and b >= 86 and c >= 86)
        {
            cout << "good";
            return 0;
        }   
    }
    cout << "sorry";