#include <bits/stdc++.h>
using namespace std;
template <typename T, typename U>
std::pair<T, U> operator+(const std::pair<T, U>& l, const std::pair<T, U>& r) {
  return {l.first + r.first, l.second + r.second};
}
typedef void (*callback_function)(void);
const long long INF64 = 1e18;
const long long INF32 = 1e9;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie();
  {
    long long n, m;
    cin >> n >> m;
    set<string> st;
    long long common = 0;
    string s;
    for (long long i = (0); i < (n); i++) {
      cin >> s;
      st.insert(s);
    }
    for (long long i = (0); i < (m); i++) {
      cin >> s;
      if (st.count(s)) common++;
    }
    n -= common, m -= common;
    long long b = common / 2, a = common - b;
    cout << (a + n > b + m ? "YES" : "NO") << endl;
  }
  return 0;
}
