#include <iostream>
#include <cmath>

using namespace std;

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