N,K = map(int,input().split())
L = list(map(int,input().split()))
def min_gokan(A):
	B = [[]]
	i = 0
	A2 = A[:]
	while A2:
		a = A2[0]
		while B[i] == [] or a != B[i][0]:
			B[i].append(a)
			A2.remove(a)
			
			a = A[a - 1]
		i = i + 1
		B.append([])
	B.pop()
	r = len(A) - len(B)
	return r
m = min_gokan(L)
if m > K:
	print("NO")
elif (K - m) % 2 == 0:
	print("YES")
else:
	print("NO")