#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
int f(int a) {
	if (a == 0) {
		return 1;
	}
	for (int i = 0; i < 62; i++) {
		if (a >= ((int)1 << i) && a < ((int)1 << (i + 1))) {
			return f(a - ((int)1 << i)) * 2;
		}
	}
}
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int N;
	cin >> N;
	//N = (int)1 << 59;
	cout << N + 1 - f(N) << endl;
}