N = int(input())

stack = []
ceil_dist = dict()
answer = 1000000

for j in range(1, 10001):
    ceil_dist[j] = 1000000

stack.append([1, 1])
ok_flag = False

while stack:
    ceil = stack.pop()
    turn = ceil[0]
    now = ceil[1]

    dice = 0

    for j in range(14):
        if (now >> j) & 1 == 1:
            dice += 1
    
    f_now = now + dice
    p_now = now - dice

    if (f_now <= N) and (turn + 1 < ceil_dist[f_now]):
        stack.append([turn + 1, f_now])
        ceil_dist[f_now] = turn + 1
        if f_now == N:
            if turn + 1 < answer:
                answer = turn + 1
            ok_flag = True
    if (p_now >= 1) and (turn + 1 < ceil_dist[p_now]):
        stack.append([turn + 1, p_now])
        ceil_dist[p_now] = turn + 1

if ok_flag:
    print(answer)
else:
    print(-1)