#include <iostream>
using namespace std;
int main() {
int n;
int sum;
while(cin >> n) {
sum = 0;
while(n != 0) {
if(n % 2 == 1)
sum++;
n = n>>1;
}
cout << sum << endl;
}
return 0;
}
#include <iostream>
using namespace std;
int main() {
int n;
int sum;
while(cin >> n) {
sum = 0;
while(n != 0) {
if(n % 2 == 1)
sum++;
n = n>>1;
}
cout << sum << endl;
}
return 0;
}