#include <iostream>
#include <map>

int main(){
	std::map<std::string, int> index;
	int N, K;
	std::string s;
	bool flag = true;
	std::cin >> N >> K;
	for(int n = 0; n < N; ++n){
		std::cin >> s;
		index[s] = n;
	}
	for(int n = 0; n < N; ++n){
		std::cin >> s;
		flag &= (std::abs(index[s] - n) % K == 0);
	}
	puts(flag ? "Yes" : "No");
}