include

using namespace std;
int main()
{
int x;
cin>>x;
int num=0;
if(x>=0)
{
while(x)
{
num=num+(x&0x0001);
x=x>>1;
}
cout<<num<<endl;
}
else
{
x=~x;
while(x)
{
num=num+(x&0x0001);
x=x>>1;
}
cout<<128-num+1<<endl;
}
return 0;
}