#include "bits/stdc++.h"

using namespace std;

#define DEBUG(x) cout<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cout<<#v<<":";for(int i=0;i<v.size();i++) cout<<" "<<v[i]; cout<<endl

typedef long long ll;
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define in(x, a, b) (a <= x && x < b)
#define all(c) c.begin(),c.end()
const int inf = 1000000001;
const ll INF = 2e18;
const ll MOD = 1000000007;
//const ll mod = 1000000009;
const double pi = 3.14159265358979323846;
#define Sp(p) cout<<setprecision(15)<< fixed<<p<<endl;
int dx[4] = { 1,0, -1,0 }, dy[4] = { 0,1,0,-1 };
int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };
#define fio() cin.tie(0); ios::sync_with_stdio(false);


int main() {
	int k;
	cin >> k;
	int l = 1;
	int m = 10;
	int n = 100;
	int o = k / 100;
	k -= o * 100;
	int p = k / 10;
	k -= p * 10;
	int q = k;
	cout << l + m + n + o + p + q << endl;
	rep(i, l) {
		cout << 2 << " ";
	}
	rep(i, m) {
		cout << 4 << " ";
	}
	rep(i, n) {
		cout << 6 << " ";
	}
	rep(i, o) {
		cout << 31 << " ";
	}
	rep(i, p) {
		cout << 19 << " ";
	}
	rep(i, q) {
		cout << 21 << " ";
	}
	cout << endl;
}