#include <iostream>
#include <vector>
#include <tuple>
#include <algorithm>
using namespace std;
typedef long long ll;

int main(){
    ll N;
    cin >> N;
    vector<tuple<ll,ll,ll>> vec(0);
    for (ll i = 0; i <= 500; i++){
        for (ll j = i; j <= 10000; j++){
            if (i == 0 && j == 0) continue;
            if (N - i * j > 0){
                if ((N - i * j) % (i + j) == 0){
                    ll k = (N - i * j) / (i + j);
                    if (j <= k){
                        vec.push_back(tuple<ll,ll,ll>(i, j, k));
                    }
                }
            }
        }
    }
    vector<tuple<ll,ll,ll>> ans(0);
    for (ll i = 0; i < vec.size(); i++){
        vector<ll> subvec(3);
        subvec[0] = get<0>(vec[i]);
        subvec[1] = get<1>(vec[i]);
        subvec[2] = get<2>(vec[i]);
        do{
            ans.push_back(tuple<ll,ll,ll>(subvec[0], subvec[1], subvec[2]));
        }while(next_permutation(subvec.begin(), subvec.end()));
    }
    sort(ans.begin(), ans.end()); 
    ll len = ans.size();
    cout << len << endl;
    for (ll i = 0; i < len; i++){
        cout << get<0>(ans[i]) << " " << get<1>(ans[i]) << " " << get<2>(ans[i]) << endl;
    }
}