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

#define rep(i, a, b) for (int i = a; i < b; i++)
using ll = long long;

int main(){
    int N, K;
    cin >> N >> K;
	map<string, int> mp;
	string s;
    rep(i, 0, N) {
		cin >> s;
		mp[s] = i;
	}
	rep(i, 0, N) {
		cin >> s;
		int d = abs(i - mp[s]);
		if(d % K) {
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
}