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#include <bits/stdc++.h>

using namespace std;

bool res[2000000];

int main() {
    int sum = 0, length = 0, n, i = 1;

    

    cin >> n;


    while (sum < n) {
        sum += __builtin_popcount(i);
        res[i] = true;
        i++;
        length++;
    }
    int excess = sum - n;

    i--;
    int tmp;
    for (int j = i; j > 0 && excess > 0; --j) {
        tmp = __builtin_popcount(j);
        if (excess >= tmp) {
            excess -= tmp;
            length--;
            res[j] = false;
        }
    }

    cout << length << "\n";
    for (int j = i; j > 0; --j) {
        if (res[j]) cout << j << " ";
    }
}