#include <iostream>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
typedef long long lint;

#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))

int main()
{
	int r, b;
	string s;
	for (int i = 0; i < 3; i++)
		cin >> s, (s[0] == 'R') ? r++ : b++;
	cout << (r < b ? "BLUE" : "RED") << endl;

	return 0;
}