import sys
def main():
    input = sys.stdin.readline
    N, K = map(int, input().split())
    S = [input().strip() for _ in range(N)]
    T = [input().strip() for _ in range(N)]

    groups  = [[] for _ in range(K)]
    groups_t = [[] for _ in range(K)]
    for i in range(N):
        r = i % K
        groups[r].append(S[i])
        groups_t[r].append(T[i])

    for r in range(K):
        groups[r].sort()
        groups_t[r].sort()
        if groups[r] != groups_t[r]:
            print("No")
            return

    print("Yes")

if __name__ == "__main__":
    main()