#include<bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
#define REP(i,n) for(int i = 0;i < (n);i++)
#define pb push_back

const int INF = 1e9;
 
const ll mod=1e9+7;
 
int main(){

  ll nn;
  cin >> nn;
  ll sum = 0;
  ll n = nn;
  while(n%2 == 0){
    sum++;
    n /= 2;
    if(n == 0)
      break;
  }
  //cout << sum << endl;
  ll res = 0;
  REP(i,nn/2+1){
    ll sumn = 0;
    ll r = i;
    while(r%2 == 0 && r != 0){
      sumn++;
      r /= 2;
      
    }
    //cout << sumn << endl;
    if(sum > sumn && i != 0)
      res++;
  }
  if(nn%2 == 0 && nn != 0)
    cout << (res-1)*2+1 <<endl;
  else if(nn == 0)
    cout << 0 << endl;
  else
    cout << res*2 << endl;
}