#include <bits/stdc++.h>
using namespace std;

#define For(i, a, b) for(int i = (a); i < (b); i++)
#define rep(i, n) For(i, 0, n)
#define rFor(i, a, b) for(int i = (a); i >= (b); i--)
#define ALL(v) (v).begin(), (v).end()
#define rALL(v) (v).rbegin(), (v).rend()
#define SZ(v) ((int)(v).size())

using lint = long long;
using ld = long double;

int INF = 2000000000;
lint LINF = 1000000000000000000;

struct SetupIo {
    SetupIo() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
        cout << fixed << setprecision(15);
        cerr << fixed << setprecision(15);
    }
} setupio;

int main() {
    int n, k;
    cin >> n >> k;
    unordered_map<string, int> mp;
    rep(i, n) {
        string s;
        cin >> s;
        mp[s] = i;
    }
    rep(i, n) {
        string t;
        cin >> t;
        int diff = abs(i - mp[t]);
        if (diff % k) {
            cout << "No\n";
            return 0;
        }
    }
    cout << "Yes\n";
}