快乐星球

#include<algorithm>
/*

*/
#include<bits/stdc++.h>
using namespace std;
#define int long long
int solve(int n){
	int x=n,cnt=0;
	while(x!=0){
		cnt++,x/=2;
	}
	return cnt;
}
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	int n;cin>>n;
	int v=pow(2,solve(n));
	int ans=n*solve(n)+(n-v);
	cout<<ans;
	return 0;
}