/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2022.03.13 10:28:42
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;


ll f(ll x) {
    int c = 0;
    while(x > 1) {
        c++;
        x >>= 1;
    }
    for (int i = 0; i < c; i++) {
        x <<= 1;
    }
    return x;
}

int main() {
    ll n;cin >> n;
    if (n == 0) {
        cout << -1 << endl;
        return 0;
    }
    vector<ll> ans;
    while(n>0) {
        ll x = f(n);
        n = n^(2*x-1);
        ans.push_back(x);
    }
    cout << ans.size() << endl;
    for (int i = 0; i < ans.size(); i++) {
        cout << ans[i] << " ";
    }
    cout << endl;
    return 0;
}