#include <iostream> #include <string> #include <queue> #include <stack> #include <algorithm> #include <list> #include <vector> #include <complex> #include <utility> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <bitset> #include <ctime> #include <map> #include <unordered_map> #include <set> #include <unordered_set> #include <cassert> #include <cstddef> #include <iomanip> #include <numeric> #include <tuple> #define REP(i,n) for(long (i)=0;(i)<(n);(i)++) #define FOR(i,a,b) for(long (i)=(a);(i)<(b);(i)++) #define RREP(i,a) for(long (i)=(a)-1;(i)>=0;(i)--) #define FORR(i,a,b) for(long (i)=(a)-1;(i)>=(b);(i)--) #define MOD 1000000007 #define PI acos(-1.0) #define DEBUG(C) cout<<C<<endl; #define PII pair<int,int> #define PLL pair<long,long> #define ALL(a) (a).begin(),(a).end() #define SORT(a) sort((a).begin(),(a).end()) #define RSORT(a) sort((a).begin(),(a).end(),greater<int>()) #define MP(a,b) make_pair(a,b) typedef long long LL; typedef unsigned long long ULL; using namespace std; int main(void){ LL N; cin>>N; LL no=0,sp=0; LL Nbuf=N; while(N){ no+=N; N/=2; } sp+=Nbuf*2; cout<<sp-no<<endl; }