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

dic = {}
for i in range(N):
    a = input()
    dic[a] = (i+1)%K
flag = False
for i in range(N):
    a = input()
    if (i+1)%K != dic[a]:
        flag = True
        
if flag:
    print("No")
else:
    print("Yes")