#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
pair<int,int> solve(int a) {
	int x = sqrt(a) + 0.5;
	for (int i = x; i >= 1; i--) {
		if (a%i == 0) {
			return make_pair(i, a / i);
		}
	}
	return make_pair(0, 0);
}
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int N;
	cin >> N;
	pair<int, int>p1;
	pair<int, int>p2;
	for (int i = 0; i <= N; i++) {
		p1 = solve(N - i);
		p2 = solve(i);
		int n = p1.first + p1.second + p2.first + p2.second;
		if (n <= 250) {
			cout << n << endl;
			for (int j = 0; j < p1.first; j++) {
				cout << 2 << " ";
			}
			for (int j = 0; j < p1.second; j++) {
				cout << 5 << " ";
			}
			for (int j = 0; j < p2.first; j++) {
				cout << 4 << " ";
			}
			for (int j = 0; j < p2.second; j++) {
				cout << 13 << " ";
			}
			return 0;
		}
	}
}