a,b=map(int,input().split())
moto={input():i for i in range(a)}
ato={input():i for i in range(a)}
n=False
for k,v in moto.items():
	if (abs(v-ato[k]))%b!=0:
		print('No')
		n=True
		break
if n==False:
	print('Yes')