#include <iostream>
#include <cmath>
using namespace std;

    int main() {
        int R, G, B;
        cin >> R >> G >> B;

        if(R <= 255 && G <= 255 && B <= 255 && R * G * B >= 0){
            if((abs(R - G)<10 && abs(B - G)<10 && abs(B - R)<10)){
                cout <<"GRI";
            return 0;
            }
            else
                cout << "CULOARE";
                }
                else
                    cout<<"NU E CULOARE";
    return 0;
    }