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

S = [list() for _ in range(K)]
for i in range(N):
    S[i%K].append(input())

T = [list() for _ in range(K)]
for i in range(N):
    T[i%K].append(input())

for i in range(K):
    S[i].sort()
    T[i].sort()
    if S[i] != T[i]:
        exit(print('No'))
print('Yes')