N = int(input())

def wfs():
    nowpos = {1:[1]}
    count = 1
    while(True):
        count += 1
        nextpos = {}
        for num in nowpos.keys():
            progress = getBynum(num)
            if num + progress == N:
                return count
            elif (num + progress < N) & ((num + progress) not in nowpos[num]):
                nextpos[num + progress] = nowpos[num] + [num + progress]

            if num - progress == N:
                return count
            elif (num - progress > 1) & ((num - progress) not in nowpos[num]):
                nextpos[num - progress] = nowpos[num] + [num - progress]
        if(len(nextpos) == 0):
            return -1
        nowpos = nextpos


def getBynum(num):
    return bin(num)[2:].count('1')

print(wfs())