import std.algorithm, std.array, std.range;
import std.string, std.conv;
import std.stdio, std.typecons;

void main()
{
  auto n = readln.chomp.to!int;
  auto pi = iota(n).map!((s) {
    const t = readln.split;
    auto u = t[0..4].map!(to!int).array;
    u.sort;
    return tuple(u, t[4]);
  });

  auto i = iota(9).map!(e => e + 1).array;
  auto r = reduce!((a, p) {
    if (p[1] == "YES") {
      return setIntersection(a, p[0]).array;
    } else {
      return setDifference(a, p[0]).array;
    }
  })(i, pi);

  writeln(r[0]);
}