N, K = map(int, input().split())
S = [input() for _ in range(N)]
T = [input() for _ in range(N)]

SS = [[] for _ in range(K)]
TT = [[] for _ in range(K)]
for i in range(N):
    SS[i % K].append(S[i])
    TT[i % K].append(T[i])

for i in range(K):
    if sorted(SS[i]) != sorted(TT[i]):
        print("No")
        break
else:
    print("Yes")