n,k = map(int,input().split(' '))
d = list(map(lambda x:int(x)-1,input().split(' ')))
pos = [0] * n

for i in range(n):
    pos[d[i]] = i
for i in range(n):
    if d[i] != i:
        pos[d[i]] = pos[i]
        d[i],d[pos[i]] = d[pos[i]],d[i]
        k -= 1
if k >= 0 and k % 2 == 0:
    print("YES")
else:
    print("NO")