#include<iostream>

using namespace std;

int Count(size_t value)
{
    int count = 0;
    for (int i = 0; i < 32; ++i)
    {
        if (value % 2 == 1)
        {
            count++;
        }
        value /= 2;
    }
    return count;
}
int main()
{
    int one_count = 0;
    size_t value;
    while (cin >> value)
    {
        one_count = Count(value);
        cout << one_count << endl;
    }
    return 0;
}