#include <iostream>
using namespace std;

int main () {
    int r = 0;
    int b = 0;
    for (int i = 0; i < 3; i ++) {
        string l;
        cin >> l;
        if (l == "BLUE") {
            b++;
        }
        else {
            r++;
        }
    }
    if (r > b) {
        cout << "RED" << endl;
    }
    else {
        cout << "BLUE" << endl;
    }
}