#include<bits/stdc++.h>

using namespace std;

void process(int num, int& res){
    while(num != 0){
        res++;
        num = num & (num - 1);
    }
}

int main(){
    int num = 0;
    while(cin>>num){
        int res = 0;
        process(num, res);
        cout<<res<<endl;
    }
        
    return 0;
}