#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){

    int N, ans=0;
    cin >> N;
    vector<vector<int>> v;
    for (int x=0; x<=N; x++){
        for (int y=0; y<=N/x; y++){
            if (x == 0 && y == 0) continue;
            if (N-x*y >= 0 && (N-x*y)%(x+y) == 0){
                v.push_back({x, y, (N-x*y)/(x+y)});
            }
        }
    }

    cout << v.size() << '\n';
    for (auto &x : v) cout << x[0] << " " << x[1] << " " << x[2] << '\n';

    return 0;
}