#include <bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    int r=0,b=0,n=3;
    while(n--){
        cin>>s;
        if(s[0]=='R')r++;
        else b++;
    }
    if(r>b)cout<<"RED"<<endl;
    else cout<<"BLUE"<<endl;
    return 0;
}