#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  string s;
  int b=0,r=0;
  rep(i,3){
    cin>>s;
    s=="BLUE"?b++:r++;
  }
  cout<<(b>r?"BLUE":"RED")<<endl;
}