n, k = map(int, input().split())
d = list(map(int, input().split()))
idx = [0] * n
for i in range(n):
    d[i] -= 1
    idx[d[i]] = i
swaps = 0
for i in range(n):
    if d[i] == i:
        continue
    x = idx[i]
    d[i], d[x] = d[x], d[i]
    idx[d[i]] = i
    idx[d[x]] = x
    swaps += 1
if k >= swaps and (k - swaps) % 2 == 0:
    print('YES')
else:
    print('NO')