def change_one(darr):
    for i in range(len(darr)):
        j = darr[i] - 1
        if i != j:
            tmp = darr[i]
            darr[i] = i + 1
            darr[j] = tmp
            return True

    return False



_, k = tuple(int(x) for x in input().split())
darr = [int(x) for x in input().split()]

dcnt = 0

while change_one(darr):
    dcnt += 1

if k >= dcnt and (k - dcnt) % 2 == 0:
    print("YES")
else:
    print("NO")