n,k = map(int,input().split())
s = [[] for i in range(k)]
for i in range(n):
    s[i%k].append(list(input().rstrip()))
t = [[] for i in range(k)]
for i in range(n):
    t[i%k].append(list(input().rstrip()))
print('Yes' if all(sorted(s[i]) == sorted(t[i]) for i in range(k)) else 'No')