from collections import Counter
import heapq


def bsf(my_number):
    if my_number == 1:
        return 1
    my_heap = list()
    seen = set()
    heapq.heappush(my_heap, (1, 1))
    while len(my_heap) > 0:
        count, node_id = heapq.heappop(my_heap)
        if node_id in seen:
            continue
        seen.add(node_id)
        crt_ones = get_num_ones(node_id)
        if node_id + crt_ones == my_number:
            return count + 1
        if (0 < node_id + crt_ones < my_number) and ((node_id + crt_ones) not in seen):
            heapq.heappush(my_heap, (count + 1, node_id + crt_ones))
        if (0 < node_id - crt_ones < my_number) and ((node_id - crt_ones) not in seen):
            heapq.heappush(my_heap, (count + 1, node_id - crt_ones))
    return -1


def get_num_ones(my_int):
    return Counter(str(bin(my_int))[2:]).get('1')

if __name__ == '__main__':
    print(bsf(int(input())))