#include <bits/stdc++.h>
using namespace std;

long long power(long long a, long long b) {
    long long cur = a, ans = 1;
    for (int i = 0; i < 60; i++) {
        if (b & (1LL << i)) {
            ans = (ans * cur);
        }
        cur = (cur * cur);
    }
    return ans;
}

using lint = long long;

int main() {
    lint n;
    cin >> n;
    lint cnt = __builtin_popcountl(n);
    cout << (cnt < 2 ? 0 : power(2LL, cnt) - 2LL) << endl;
}