$5 = K * N
$5 = $5 - 1
$0 = N
$1 = 2 * N
$1 = $1 - 1
while $0 < $1
  $2 = $0 + $1
  $2 = $2 + 1
  $2 = $2 / 2
  $3 = $2 - N
  $4 = 2 * N
  $4 = $4 - $2
  $4 = $2 * $4
  $4 = $4 + $5
  $4 = $4 / K
  $4 = $4 / N
  if $3 >= $4
    $1 = $2 - 1
  end
  if $3 < $4
    $0 = $2
  end
end
return $0