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#include <bits/stdc++.h>
 
using namespace std;
 
#define endl '\n'
#define L long long
#define MP make_pair
#define REP(i, n) for(int i = 0; i < n; ++i)
#define REPR(i, n) for(int i = n - 1; i >= 0; --i)
#define FOR(i, a, b) for(int i = a; i < b; ++i)
#define FORR(i, a, b) for(int i = b - 1; i >= a; --i)
#define EB emplace_back
#define ST first
#define ND second
#define S size
#define RS resize
 
template<class T> using P = pair<T, T>;
template<class T> using V = vector<T>;

int count_bits(int x) {
    int res = 0;

    REP(i, 20) {
        if (x & (1 << i)) {
            res++;
        }
    }

    return res;
}
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
 
    int n;
    cin >> n;

    V<int> bits(1);
    int sum = 0;
    while (sum < n) {
        bits.EB(count_bits((int)bits.size()));
        sum += bits.back();
    }

    V<int> ans;
    REPR(i, (int)bits.size()) {
        if (sum - bits[i] >= n) {
            sum -= bits[i];
        }
        else {
            ans.EB(i);
        }
    }

    cout << ans.size() << '\n';
    for (int x : ans) {
        cout << x << ' ';
    }
}

// g++ -std=c++17 -Wall -Wextra -Wshadow -Wconversion -D_GLIBCXX_DEBUG muz.cpp -o muz