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

int main()
{
    string s;
    int r = 0,b = 0;
    for(int i = 0; i < 3; i++){
        cin >> s;
        if(s[0] == 'R') r++;
        else b++; 
    }

    cout << (r > b ? "RED" : "BLUE") << endl;

    return 0;
}