#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.hpp"
#else
#define debug(...) 1
#endif

const int MX = 3300;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<tuple<int, int, int>> ans;
    for (int x = 0; x <= MX; x++) {
        for (int y = 0; y <= MX; y++) {
            if (x == 0 && y == 0) {
                continue;
            }
            if (n - x * y < 0) {
                continue;
            }
            if ((n - x * y) % (x + y) == 0) {
                ans.emplace_back(x, y, (n - x * y) / (x + y));
            }
        }
    }
    cout << ans.size() << '\n';
    for (int i = 0; i < (int) ans.size(); i++) {
        cout << get<0>(ans[i]) << ' ' << get<1>(ans[i]) << ' ' << get<2>(ans[i]) << '\n';
    }
}