#include <bits/stdc++.h>

using namespace std;

int main() {
  vector<int> cnts(2, 0);
  for (int i = 0; i < 3; ++i) {
    string a;
    cin >> a;
    if (a == "BLUE") cnts[0]++;
    else cnts[1]++;
  }

  cout << (cnts[0] > cnts[1]? "BLUE": "RED") << '\n';
}