n, k = map(int, input().split())
d = list(map(int, input().split()))

memo = {}
for i in range(n):
    memo[d[i]] = i

ans = 0
for i in range(n):
    if memo[i + 1] != i:
        memo[d[i]] = memo[i + 1]
        memo[i + 1] = i
        ans += 1

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