#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    int N;
    cin >> N;

    int ans = 0;
    vector<tuple<int,int,int>> res;
    rep(x, 0, 1000){
        rep(y, 0, 1000){
            if(x == 0 && y == 0) continue;
            int w = N - x*y;
            if(w % (x + y) != 0 || w < 0) continue;
            ans++;
            int z = w / (x + y);
            res.push_back({x,y,z});
        }
    }

    cout << ans << endl;
    for(auto [x, y, z] : res){
        cout << x << ' ' << y << ' ' << z << endl;
    }

    return 0;
}