N,K=map(int,input().split())
s=[set() for i in range(K)]
t=[set() for i in range(K)]
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")