#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
typedef long long ll;
const int INF = 1<<30;
const ll INFLL = 1LL<<60;
const ll MOD = 1000000007;
const double INFD = 1.0E10;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, -1, 0, 1};
//const int dx[8] = {1, 1, 0, -1, -1, -1, 0, 1};
//const int dy[8] = {0, 1, 1, 1, 0, -1, -1, -1};
using Pair = pair<ll, ll>;
using Graph = vector<vector<ll, ll> >;
using mint = atcoder::modint1000000007;


int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
    int n, k; cin >> n >> k;
    map<string, int> mp;
    for (int i = 0; i < n; i++){
        string s; cin >> s;
        mp[s] = i;
    }
    
    bool ok = true;
    for (int i = 0; i < n; i++){
        string t; cin >> t;
        if (mp[t] % k != i % k) ok = false;
    }
    
    
    cout << (ok ? "Yes" : "No") << endl;
    
    
    return 0;
}