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

A = []
for _ in range(N):
	A.append(input())

B = []
for _ in range(N):
	B.append(input())
	


for i in range(K):
	tmp1 = []
	tmp2 = []
	for j in range(i,N,K):
		tmp1.append(A[j])
		tmp2.append(B[j])
	tmp1.sort()
	tmp2.sort()
	if tmp1 != tmp2:
		print("No")
		exit()
print("Yes")