import copy

N = int(input())
endcount = []

def dfs(num, count, passlist):
    count += 1
    #print (str(count) + ':' + str(num))
    progress = getBynum(num)
    if num + progress == N:
        endcount.append(count+1)
        return
    elif (num + progress < N) & ((num + progress) not in  passlist):
        #print(passlist)
        passlist.append( num + progress)
        dfs(num + progress, count, copy.deepcopy(passlist))

    if num - progress == N:
        endcount.append(count+1)
        return
    elif (num - progress > 1) & ((num - progress) not in passlist):
        passlist.append( num - progress)
        dfs(num - progress, count, copy.deepcopy(passlist))

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

dfs(1 ,0, [1])
if(len(endcount) == 0):
    print(-1)
else:
    print(min(endcount))