#include <iostream>
#define REP(i,a) for(int i = 0; i < a; i++)
using namespace std;

int main ()
{
  int nums[10] = {0};  // 0~9の数字, YESの時1を足し、NOの時1を引く
  int res[4] = {};  // 提示する4つの数字
  int N;
  cin >> N;

  REP (i, N) {
    REP (i, 4) cin >> res[i];
    string s;
    cin >> s;
    REP (i, 4) {
      if (s == "YES") nums[res[i]]++;
      else nums[res[i]]--;
    }
  }
  int max = -100,  cnt = -100;
  REP (i, 10) {
    if (cnt < nums[i]) {
      max = i;
      cnt = nums[i];
    }
  }
  cout << max << endl;
  return 0;
}