A-2018

#define _USE_MATH_DEFINES
#include <fstream>
#include <vector>
#include <iostream>
#include <algorithm>
#include <math.h>
#include <cmath>
#include <string>
#include <set>
#include <deque>
#include <cctype>
#include <iomanip>
#include <stdlib.h>
#include <queue>
#pragma comment(linker, "/STACK:2000000")

using namespace std;



int main()
{
    ifstream in("input.txt");
    ofstream out("output.txt");
    int w, l, h;
    in >> w >> l >> h;
    if (min(w, l) / h >= 2 && max(w, l) / min(w, l) < 2)
    {
        out << "good";
    }
    else
    {
        out << "bad";
    }
    in.close();
    out.close();
    return 0;
}