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

S = [input() for i in range(N)]
T = [input() for i in range(N)]


pos = [set() for i in range(K)]

for i in range(N):
    pos[i%K].add(S[i])

ans = "Yes"
for i in range(N):
    if T[i] not in pos[i%K]:
        ans = "No"
        break

print (ans)