1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#include <iostream>
#include <vector>
using namespace std;

const int N = (int)1e6+1;
int n, sum, tab[N], k;
vector <int> V;
int main(){
	ios_base::sync_with_stdio(0);
	cin>>n;
	for (int i=1; i<=n; i++){
		tab[i] = __builtin_popcount(i);
		sum+=tab[i];
		k++;
		if (sum>=n) break;
	}

	while (k){
		if (sum - tab[k] >= n)
			sum -= tab[k];
		else
			V.push_back(k);
		k--;
	}
	cout<<V.size()<<"\n";
	for (auto x : V) 
		cout<<x<<" ";
	cout<<"\n";
}