import sys

def debug(x, table):
    for name, val in table.items():
        if x is val:
            print('DEBUG:{} -> {}'.format(name, val), file=sys.stderr)
            return None

def solve():
    N, K = map(int, input().split())
    Ds = [int(i) - 1 for i in input().split()]
    checked = [False] * N
    num_gokan = 0

    for i in range(N):
        if checked[i]:
            continue
            
        checked[i] = True

        len_cyc = 0
        nxt = Ds[i]

        while not checked[nxt]:
            checked[nxt] = True
            nxt = Ds[nxt]
            len_cyc += 1

        num_gokan += len_cyc

    if num_gokan <= K and num_gokan % 2 == K % 2:
        ans = 'YES'
    else:
        ans = 'NO'

    print(ans)

if __name__ == '__main__':
    solve()