#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;
  vector<int> A(N), B(N), C(N), D(N);
  vector<string> R(N);
  for (int i = 0; i < N; i++)
    cin >> A[i] >> B[i] >> C[i] >> D[i] >> R[i];
  vector<int> n(10, 0);
  for (int i = 0; i < N; i++)
    if (R[i] == "YES")
      n[A[i]]++, n[B[i]]++, n[C[i]]++, n[D[i]]++;
    else
      n[A[i]] = -1000000000, n[B[i]] = -1000000000, n[C[i]] = -1000000000,
      n[D[i]] = -1000000000;
  int maxn = -1000000001, ans;
  for (int i = 0; i < 10; i++)
    if (n[i] > maxn)
      maxn = n[i], ans = i;
  cout << ans << endl;
}