#include <algorithm>
#include <cmath>
#include <complex>
#include <cstdlib>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits.h>
#include <map>
#include <math.h>
#include <numeric>
#include <queue>
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <time.h>
#include <unordered_map>
#include <vector>

using namespace std;

int main() {
    int Red = 0;
    int Blue = 0;
    for (int i = 0; i < 3; i++) {
        string s;
        cin >> s;
        if (s == "RED") {
            Red++;
        } else if (s == "BLUE") {
            Blue++;
        }
    }
    cout << (Red > Blue ? "RED" : "BLUE") << endl;
}