<?php
$N = trim(fgets(STDIN));
$route = array_fill(0, $N, -1);
$route[0] = $queue[0] = 1;

while(!empty($queue)) {
	$pos = array_shift($queue);
	$move = substr_count(decbin($pos), 1);
    if($pos + $move <= $N && $route[$pos + $move - 1] === -1) {
        $route[$pos + $move - 1] = $route[$pos - 1] + 1;
		$queue[] = $pos + $move;
	}
	if($pos - $move > 1 && $route[$pos - $move - 1] === -1) {
		$route[$pos - $move - 1] = $route[$pos - 1] + 1;
		$queue[] = $pos - $move;
	}
}

echo $route[$N -1].PHP_EOL;