N, K = map(int, input().split())
D = [0] + list(map(int, input().split()))

done = [0] * (N + 1)
cnt = 0
for i in range(1, N+1):
    if D[i] == i: continue
    if not done[D[i]] or not done[i]:
        cnt += 1
        done[D[i]] = done[i] = True
yes = cnt <= K and cnt % 2 == K % 2
print('YES' if yes else 'NO')