n, k = map(int, input().split())
S = [ input() for i in range(n) ]
T = [ input() for i in range(n) ]

M = {}
for i in range(n):
	M[T[i]] = i

for i in range(n):
	S[i] = M[S[i]]

A = [ S[i::k] for i in range(k) ]


for i in range(k):
	for a in A[i]:
		if a % k != i:
			print("No")
			exit()
print("Yes")