#include <iostream>
int main()
{
using namespace std;
int number = 0;
while(cin>>number)
{
int i = 0;
if(number == 0)
{
cout<<i<<endl;
}
else
{
while(number)
{
number &= number-1;
i++;
}
cout<<i<<endl;
}
}
return 0;
}
int main()
{
using namespace std;
int number = 0;
while(cin>>number)
{
int i = 0;
if(number == 0)
{
cout<<i<<endl;
}
else
{
while(number)
{
number &= number-1;
i++;
}
cout<<i<<endl;
}
}
return 0;
}