GHISO C++

#include<bits/stdc++.h>
using namespace std;
int n,d;
int main()
{
    freopen("ghiso.inp","r",stdin);
    freopen("ghiso.out","w",stdout);
    cin>>n;
    d=0;
    while (n>0)
    {
        if (n%2==0) n=n/2
        else n--;
        d++;
    }
    cout<<d;
}