#include <iostream>
#include <vector>
#include <bitset>
using namespace std;

int main(){
    int n;
    int cnt = 0;
    vector<int> vec;
    while(cin >> n){
     bitset<32> b(n);
//         for(int i = 0; i < b.size(); i++){
//             if(b[i] == 1){
//                 cnt++;
//             }
//         }
        cout << b.count() << endl;
    }

   
   
}