import java.io.*; import java.util.*; import java.util.stream.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); for (int i = 1; i * i <= n; i++) { for (int j = i; j * i <= n; j++) { int remain = n - i * j; for (int k = 1; i + j + k < 250; k++) { if (remain % k == 0 && i + j + k + remain / k <= 250) { ArrayList ans = getList(i, j, k, remain / k); System.out.println(ans.size()); System.out.println(ans.stream().map(x -> x.toString()).collect(Collectors.joining(" "))); return; } } } } } static ArrayList getList(int a, int b, int c, int d) { ArrayList ans = new ArrayList<>(); while (a-- > 0) { ans.add(3); } while (b-- > 0) { ans.add(4); } while (c-- > 0) { ans.add(5); } while (d-- > 0) { ans.add(6); } return ans; } } class Utilities { static String arrayToLineString(Object[] arr) { return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n")); } static String arrayToLineString(int[] arr) { return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new)); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public int[] nextIntArray() throws Exception { return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }