class Yukicoder:
    def __init__(self):
        self.n = int(input())

    def run(self):
        visited = set([])
        queue = [1]
        cnt = 0
        while len(queue) != 0:
            cnt += 1

            new_queue = []
            for q in queue:
                if q == self.n:
                    return cnt
                step = bin(q).count('1')
                front = q + step
                back = q - step
                if front <= self.n and front not in visited:
                    visited.add(front)
                    new_queue.append(front)
                if 0 < back and back not in visited:
                    visited.add(back)
                    new_queue.append(back)
            queue = new_queue
        return -1

y = Yukicoder()
print(y.run())