#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define repb(i, a, b) for(int i = a; i >= b; i--)
#define all(a) a.begin(), a.end()
#define o(a) cout << a << endl
#define int long long
#define fi first
#define se second
using namespace std;
typedef pair<int, int> P;

signed main(){
    int n;
    cin >> n;
    rep(i, 1, n){
        rep(j, i, n){
            int k = n - i - j;
            if(j <= k){
                cout << i <<" "<< j  << " "<< k << endl;
            }
        }
    }
}