n, k = map(int, input().split())
a = [0] + list(map(int, input().split()))  
x = 0

for i in range(1, n + 1):
    while a[i] != i:
        t = a[i]
        a[i], a[t] = a[t], a[i]  
        x += 1

if x <= k and x % 2 == k % 2:
    print("YES")
else:
    print("NO")