n = int(input())
board = [-1 for _ in range(n+1)]
board[1] = 1
i = 1
while i <= n:
    c = bin(i)[2:].count("1")
    if board[i] < 0:
        i += 1
        continue
    if i+c < n+1 and (board[i+c] > board[i]+1 or board[i+c] == -1):
        board[i+c] = board[i] + 1
    if i-c > 0:
        if board[i-c] > board[i]+1 or board[i-c] == -1:
            board[i-c] = board[i]+1
            i = i-c
            continue
    i += 1

print(board[n])