n, k = map(int, input().split())
before = [input() for _ in range(n)]
after = [input() for _ in range(n)]

re_before = [[] for _ in range(k)]
re_after = [[] for _ in range(k)]

for i in range(n):
    re_before[i%k].append(before[i])
    re_after[i%k].append(after[i])

flag = True
for i in range(k):
    if sorted(re_before[i]) != sorted(re_after[i]):
        flag = False
        break

print("Yes" if flag else "No")