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

SS = [input() for _ in range(N)]
TT = [input() for _ in range(N)]

ok = True
for i in range(K):
    if i+K >= N: break
    a = []
    b = []
    for j in range(i, N, K):
        a.append(SS[j])
        b.append(TT[j])

    a.sort()
    b.sort()
    if a != b:
        ok = False
        break

if ok:
    print('Yes')
else:
    print('No')