#include<iostream>
#include<vector>
#include<string>
#include<cstdio>
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++;
    }
    if(R>B) cout<< "RED";
    else    cout << "BLUE";
    return 0;
}