N, K = map(int, input().split())
S = [input() for _ in range(N)]
T = [input() for _ in range(N)]
for i in range(K):
    s = []
    t = []
    for j in range(i, N, K):
        s.append(S[j])
        t.append(T[j])
    s.sort()
    t.sort()
    if s != t:
        print("No")
        break
else:
    print("Yes")