u = 0
N,K = input().split()
N = int(N)
K = int(K)

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

for i in range(0,N):
    m = T.index(S[i])
    if (m - i) % K != 0:
        u = 1
if u == 0:
    print("Yes")
else:
    print("No")