N,K = map(int,input().split())
L = list(map(int,input().split()))

def min_gokan(A):
	count = 0
	for i,a in enumerate(A):
		if a - 1 != i:
			A[i],A[a - 1] = A[a - 1],A[i]
			count = count + 1
	return count
		

m = min_gokan(L)
if m > K:
	print("NO")
elif (K - m) % 2 == 0:
	print("YES")
else:
	print("NO")