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

cycles = 0
done = [0] * N
for i in range(N):
    j = i
    if not done[i]: cycles += 1
    while not done[j]:
        done[j] = True
        j = D[j] - 1
cnt = N - cycles

yes = cnt <= K and cnt % 2 == K % 2
print('YES' if yes else 'NO')