N, K = map(int, input().split())
S = [input() for _ in range(N)]
T = [input() for _ in range(N)]

revT = {}
for i, t in enumerate(T):
    revT[t] = i

a = []
for s in S:
    a.append(revT[s])

ans = "Yes"
for i in range(N):
    if (a[i]-i)%K!=0:
        ans = "No"
        break
print(ans)