#include <iostream>

#include <cmath>

using namespace std;

int r, g, b;

int main()

{

   cin >> r >> g >> b;

   if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255)

       if (abs(r - g) <= 10 && abs(r - b) <= 10 && (g - b) <= 10)

           cout << "GRI";

       else cout << "CULOARE";

   else cout << "NU E CULOARE";

   return 0;

}