import sys

def main() -> None:
    sys.setrecursionlimit(1 << 25)
    input = sys.stdin.readline

    N, K = map(int, input().split())

    S = [input().strip() for _ in range(N)]
    T = [input().strip() for _ in range(N)]

    if K == 1:
        print("Yes")
        return

    groups_S = [[] for _ in range(K)]
    groups_T = [[] for _ in range(K)]

    for i in range(N):
        r = i % K
        groups_S[r].append(S[i])
        groups_T[r].append(T[i])

    for r in range(K):
        if sorted(groups_S[r]) != sorted(groups_T[r]):
            print("No")
            return

    print("Yes")


if __name__ == "__main__":
    main()