N, K = map(int, input().split())
D = list(map(int, input().split()))
nv = [False] * N
cnt2 = 0
for i in range(N):
    if nv[i]:
        continue
    cnt = 0
    nv[i] = True
    next = D[i] - 1
    while next != i:
        cnt += 1
        nv[next] = True
        next = D[next] - 1
    #print(i, nv)
    cnt2 += cnt
if K < cnt2:
    print("NO")
elif (K - cnt2) % 2 == 1:
    print("NO")
else:
    print("YES")