program main
  implicit none
  integer*8::N,K,i,j,count,tmp,tmp2,total
  integer*8,allocatable::D(:)
  data count/0/,total/0/
  read *,N,K
  allocate(D(N))
  read *,D

  do i=1, N-1
     if(D(i).ne.i) then
        count = 0
        tmp = i
        do
           tmp2 = D(tmp)
!           print *,tmp,tmp2
           D(tmp) = tmp
           tmp = tmp2
           count = count + 1
           if(tmp.eq.i) then
              total = total +  count - 1
              exit
           end if
        end do
     end if
  end do

  if(total .gt. K ) then
     print '("NO")'
  else if(MOD(total,2).eq.MOD(K,2)) then
     print '("YES")'
  else
     print '("NO")'
  end if
!  print *, total, K
!  call aprinter(D)
contains
  subroutine aprinter(array)
    integer*8::array(:)
    character*32::cformat='(i0,     (1x,i0))'
    write(cformat(5:9),'(i0)'),size(array)
    write(*,cformat) array
  end subroutine aprinter
end program main