#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;


map<ll,vector<int>> memo;

void make(){
  REP(N,1,251){
    rep(a,N+1){
      rep(b,N+1-a){
        int c = N-(a+b);
        if(c < 0) continue;
        
        int sum = a*(a-1) + a*b + b*c;
        if(0<=sum && sum<=10000){
          memo[sum] = {a,b,c};
          if(memo.size() == 10000) return;
        }
        if(sum >= 10000) break;
      }
    }
  }
}

int main(){
  int K;
  cin >> K;
  make();

  vector<int> ret = memo[K];
  cout << ret[0] + ret[1] + ret[2] << endl;
  vector<int> res;
  rep(i,ret[0]) res.push_back(1);
  rep(i,ret[1]) res.push_back(2);
  rep(i,ret[2]) res.push_back(3);

  rep(i,res.size()){
    if(i>0) cout << " ";
    cout << res[i];
  }
  
  return 0;
}