#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {
	long long k;
	cin >> k;
	for (long long i = 1; i <= 250; i++) {
		long long co = i * (i - 1) / 2;
		if (k >= co && (k - co) % i == 0 && (k - co) / i <= 250 - i) {
			long long now = i + (k - co) / i;
			cout << now << endl;
			for (int j = 0; j < (k - co) / i; j++) {
				cout << 2;
				if (j != now - 1) {
					cout << " ";
				}
			}
			for (int j = 0; j < i; j++) {
				cout << 1;
				if (j + (k - co) / i != now - 1) {
					cout << " ";
				}
			}
			cout << endl;
			return 0;
		}
	}
}