n, k = map(int, input().split())
ss = []
for i in range(n):
    ss.append(input())
ts = []
for i in range(n):
    ts.append(input())

if sorted(ss) != sorted(ts):
    ans = 'No'
else:
    ans = 'Yes'
    for i in range(n):
        index = ts.index(ss[i])
        if i % k != index % k:
            ans = 'No'
            break

print(ans)