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

#define rep(i,a) for(int i=0;i<a;i++)
#define f(i,a,b) for(int i=a;i<=b;i++)
#define rf(i,a,b) for(int i=a;i>=b;i--)

using ll = long long;
using ld = long double;
using vi= vector<int>;
using vvi= vector<vi>;
using vs= vector<string>;
using pii= pair<int, int>;
using vpii= vector<pii>;
#define endl '\n'

int main(void){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
	ll n, k;
	cin >> n >> k;
	map<string, int> name;
	string s;
	rep(i,n){
		cin >> s;
		name.insert(make_pair(s,i));
	}
	int x;
	rep(i,n){
		cin >> s;
		x = name[s];
		if(abs(x-i)%k != 0){
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
}