#include <iostream>
#include <vector>
#include <map>

int main() {
    int N, K;
    std::cin >> N >> K;
    
    std::vector<std::string> S(N), T(N);
    for (int i = 0; i < N; i++) {
        std::cin >> S[i];
    }
    
    for (int i = 0; i < N; i++) {
        std::cin >> T[i];
    }
    
    std::vector<std::map<std::string, int>> S_groups(K);
    std::vector<std::map<std::string, int>> T_groups(K);
    
    for (int i = 0; i < N; i++) {
        int group = i % K;
        S_groups[group][S[i]]++;
        T_groups[group][T[i]]++;
    }
    
    bool possible = true;
    for (int i = 0; i < K; i++) {
        if (S_groups[i] != T_groups[i]) {
            possible = false;
            break;
        }
    }
    
    std::cout << (possible ? "Yes" : "No") << std::endl;
    
    return 0;
}