#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  int cR = 0;
  int cB = 0;
  string s;
  cin >> N;
  for (int i = 0; i < N; ++i) {
    cin >> s;
    if (s == "R") {
      ++cR;
    } else if (s == "B") {
      ++cB;
    }
  }
  if (cR > cB) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}
