N, K = map(int, input().split())
D = [int(i) - 1 for i in input().split()]
visited = [False] * N
min_change = 0

for i in range(N):
    if visited[i]:
        continue

    visited[i] = True
    cycle_l = 0

    while not visited[D[i]]:
        i = D[i]
        visited[i] = True
        cycle_l += 1

    min_change += cycle_l

if min_change <= K and not((K - min_change) % 2):
    print('YES')
else:
    print('NO')