#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
template<typename T> inline bool chmax(T &a, T b) { return ((a < b) ? (a = b, true) : (false)); }
template<typename T> inline bool chmin(T &a, T b) { return ((a > b) ? (a = b, true) : (false)); }
#define int long long
const int INF = (1LL << 60);
//const int MOD = 1e9 + 7;
vector<int> dx = { 0,1 };
vector<int> dy = { 1,0 };

signed main() {
    int n,k; cin >> n >> k;
    vector<string> s(n);
    vector<string> t(n);
    rep(i,n) cin >> s[i];
    rep(i,n) cin >> t[i];
    map<string,pair<int,int>> mp;
    rep(i,n) {
        mp[s[i]].first = i;
        mp[t[i]].second = i;
    }
    for(auto p : mp) {
        if(((p.second.first % k) - (p.second.second % k) + k) % k !=  0) {
            cout << "No" << endl;
            return 0;
        }
    }
    cout << "Yes" << endl;
    return 0;
}