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

int main()
{
	string s1, s2, s3;
	cin >> s1 >> s2 >> s3;
	int r=0, b=0;
	if (s1 == "RED")r++;
	else b++;

	if (r > b)cout << "RED" << endl;
	else cout << "BLUE" << endl;

    return 0;
}