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

int main() {
	
	string S;
	int c=0, c1=0,i=2;

	while (cin>>S&&i--) {
		if (S[0] == 'R'&&S[1] == 'E'&&S[2] == 'D') c++;
		if (S[0] == 'B'&&S[1] == 'L'&&S[2] == 'U'&&S[3] == 'E') c1++;
	}
	
	cout <<(( c > c1) ? "RED" : "BLUE" )<< endl;
	
	return 0;
}