#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[]){
  int n, a, b, c, d;
  char s[3];
  int x[10] = {};

  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%d%d%d%d%s", &a, &b, &c, &d, s);
    if (strcmp(s, "YES") == 0) {
      x[a]++;
      x[b]++;
      x[c]++;
      x[d]++;
    } else {
      x[a]--;
      x[b]--;
      x[c]--;
      x[d]--;
    }
  }

  int r = 0;
  for (int i = 1; i < 10; i++) {
    if (x[r] < x[i]) {
      r = i;
    }
  }
  printf("%d\n", r);
  return 0;
}