#include <bits/stdc++.h>

#include <atcoder/all>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define FAST_IO                \
  ios::sync_with_stdio(false); \
  cin.tie(0);
const i64 INF = 1001001001001001001;
using Modint = atcoder::static_modint<998244353>;

int main() {
  FAST_IO
  auto ans = 0LL;

  int N, K;
  cin >> N >> K;

  map<string, int> mp;
  for (int i = 0; i < N; i++) {
    string s;
    cin >> s;
    mp[s] = i % K;
  }

  for (int i = 0; i < N; i++) {
    string s;
    cin >> s;

    if (mp[s] != i % K) {
      cout << "No" << endl;
      return 0;
    }
  }
  cout << "Yes" << endl;
}