#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;
tuple<int, int, int> t[10010];
int main() {
	for (int i = 0; i <= 250; i++) {
		for (int j = 0; j <= 250; j++) {
			for (int k = 0; k <= 250; k++) {
				if (i + j + k <= 250) {
					if (i * j + i * k + max(0, k * (k - 1) / 2) <= 10000) {
						t[i * j + i * k + max(0, k * (k - 1) / 2)] = make_tuple(i, j, k);
					}
				}
			}
		}
	}
	int k;
	cin >> k;
	cout << get<0>(t[k]) + get<1>(t[k]) + get<2>(t[k]) << endl;
	for (int i = 0; i < get<0>(t[k]); i++) {
		cout << 2 << " ";
	}
	for (int i = 0; i < get<1>(t[k]); i++) {
		cout << 3 << " ";
	}
	for (int i = 0; i < get<2>(t[k]); i++) {
		cout << 1 << " ";
	}
	cout << endl;
}