N,K=list(map(int,input().split()))
S=[]
T=[]
for i in range(K):
	S.append(set())
	T.append(set())
for i in range(N):
	s=input()
	S[i%K].add(s)
for i in range(N):
	t=input()
	T[i%K].add(t)
for i in range(K):
	if S[i]!=T[i]:
		print("No")
		exit()
print("Yes")