20 20
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 10 4
0 1 4 2 7 0 10 0 5 8
 10 7
10 8 6 5 0 0 0 4 3 9
 10 1
8 7 0 2 0 10 0 0 3 5
 10 7
7 9 2 10 0 0 0 3 5 1
 10 2
10 0 9 0 0 4 2 6 8 0
 10 2
0 7 0 10 8 0 4 2 3 0

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 3
4
8
9
 1
5
6
10
 2
4
5
7
8
10
 1
2
6
7
 1
2
3
4
6
7
8
9
 4
5
6
7
8

def f(x, p):
    q = []
    while x:
        q.append(x)
        x = p[x]
    return q
from collections import defaultdict
n, k = map(int, input().split())
t = list(map(int, input().split()))
p = [0] * (n + 1)
for i, j in enumerate(t, 1):
    p[j] = i
p = [f(i, p) for i, j in enumerate(t, 1) if j == 0]
s = defaultdict(int)
for i in p:
    if k in i: t = {i.index(k) + 1}
    else: s[len(i)] += 1
s = [list(range(i, k * i + 1, i)) for i, k in s.items()]
for q in s:
    t |= {x + y for x in q for y in t}
print('\n'.join(map(str, sorted(list(t)))))