/* -*- coding: utf-8 -*-
 *
 * 3109.cc:  No.3109 Swap members - yukicoder
 */

#include<cstdio>
#include<string>
#include<map>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_L = 32;

/* typedef */

using msi = map<string,int>;

/* global variables */

/* subroutines */

/* main */

int main() {
  int n, k;
  scanf("%d%d", &n, &k);

  msi sis;
  for (int i = 0; i < n; i++) {
    char s[MAX_L + 4];
    scanf("%s", s);
    sis[string(s)] = i;
  }

  for (int i = 0; i < n; i++) {
    char t[MAX_L + 4];
    scanf("%s", t);
    if (abs(i - sis[string(t)]) % k != 0) {
      puts("No"); return 0;
    }
  }

  puts("Yes");
  return 0;
}