N, K = map(int, input().split())
a = [0]+list(map(int, input().split()))
x = 0
visited = set()
add = visited.add
for i in range(1, N+1):
    if i in visited or a[i] == i:
        continue
    cnt = 0
    while i not in visited:
        add(i)
        cnt += 1
        i = a[i]
    x += cnt - 1
print("YES" if x <= K and (K-x)%2 == 0 else "NO")