def Bit_sugorogu2():
    N = int(input())
    List = []
    masu = 1
    cnt = 1
    while(True):
        List.append(masu)
        binary = bin(masu)
        num = binary.count("1")
        if(masu + num > N):
            break
        masu += num
        cnt += 1
    if(masu == N):
        return cnt
    else:
        while(masu != 1):
            binary = bin(masu)
            num1 = binary.count("1")
            now_masu = masu - num1
            cnt += 1
            now_cnt = cnt
            while(True):
                if(now_masu in List):
                    break
                List.append(now_masu)
                binary = bin(now_masu)
                num2 = binary.count("1")
                if(now_masu + num2 > N):
                    break
                now_masu += num2
                now_cnt += 1
            if(now_masu == N):
                return now_cnt
            masu -= num1 
            
        return -1
        
        

print(Bit_sugorogu2())