#include<bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
int x;
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
//	freopen("even.in","r",stdin);
//	freopen("even.out","w",stdout); 
	cin >> x;
	int tx = x,ans = 1;
	while(x)ans *= ((x & 1) + 1),x >>= 1;
	cout << (tx + 1) - ans;
}