#include <bits/stdc++.h>
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define FORR(i,a,b) for (int i=(a);i>=(b);i--)
#define pb push_back

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef set<int> si;
const int inf = 1e9;
const int mod = 1e9+7;

main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  int n;
  cin >> n;
  FOR(i, 1, n/3+1){
    FOR(j, i, (n-i)/2+1){
      cout << i << " " << j << " " << n - i - j << "\n";
    }
  }
  return 0;
}