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#include <iostream>
#include <string>

using namespace std;

int countOnes(int number) {
    int result = 1;
    while(number > 1) {
        if(number % 2 == 1) {
            result ++;
        }

        number  = number >> 1;
        //cout << "number :" << number << "\n";
    }

    return result;
}


int main() {

    std::ios_base::sync_with_stdio(false);
    std::cin.tie(NULL);
    //cout << countOnes(1);
    int* onesNumber = new int[1000000];
    int* onesSum = new int[1000000];
    int* result = new int[1000000];


    int sum;
    cin >> sum;
    int number = 1;
    onesNumber[1] = 1;
    onesSum[1] = 1;

    while(sum > onesSum[number]) {
        number++;
        onesNumber[number] = countOnes(number);
        onesSum[number] = onesSum[number - 1] + onesNumber[number];
        //cout << "number: " << number << ", oneSum: " << onesSum[number] << " onesNumber: " << onesNumber[number] << "\n";
    }

    int count = 0;

    while(sum > 0) {
        if(number == 1 ) {
             result[count] = number;
            sum -= onesNumber[number];
            count++;


        } else if(onesSum[number - 1] < sum) {
            result[count] = number;
            sum -= onesNumber[number];
            count++;
        }
        number--;
    }
    cout << count << "\n";
    for(int i = 0; i < count; i++) {
        cout << result[i];
        if(i == count - 1) {
            cout << "\n";
        } else {
            cout << " ";
        }
    }


    return 0;
}