#include <iostream>
#include <string>
using namespace std;
int main(void){
    string s;
    long long cntA=0,cntB=0;
    while(cin >> s){
        if(s == "BLUE"){
            cntB++;
        }else{
            cntA++;
        }
    }
    if(cntA < cntB){
        cout << "BLUE" << endl;
    }else{
        cout << "RED" << endl;
    }
    return 0;
}