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
30
#include <bits/stdc++.h>
using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int n;
	cin >> n;
	int xd = 0;
	for (int i = 1; i <= n; i++) {
		xd += __builtin_popcount(i);
		if (xd == n) {
			cout << i << "\n";
			for (int j = i; j >= 1; j--)
				cout << j << " ";
			return 0;
		}
		if (xd > n) {
			int zos = xd - n;
			cout << i - 1 << "\n";
			for (int j = i; j >= 1; j--) {
				if (__builtin_popcount(j) == zos)
					zos = 0;
				else
					cout << j << " ";
			}
			return 0;
		}
	}
}