using System.Collections.Generic;
using System.Linq;
using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var k = int.Parse(line[1]);
        getAns(n, k);
    }
    static List<string>[] read(int n, int k)
    {
        var aa = new List<string>[k];
        for (int i = 0; i < k; i++) aa[i] = new List<string>();
        for (int i = 0; i < n; i++)
        {
            var s = Console.ReadLine().Trim();
            var r = i % k;
            aa[r].Add(s);
        }
        return aa;
    }
    static void getAns(int n, int k)
    {
        var aa = read(n, k);
        var bb = read(n, k);
        for (int i = 0; i < k; i++)
        {
            aa[i].Sort();
            bb[i].Sort();
        }
        for (int i = 0; i < k; i++)
        {
            var ma = aa[i].Count();
            var mb = bb[i].Count();
            if (ma != mb) { Console.WriteLine("No"); return; }
            for (int j = 0; j < ma; j++)
            {
                if (aa[i][j] != bb[i][j]) { Console.WriteLine("No"); return; }
            }
        }
        Console.WriteLine("Yes");
    }
}