#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;

  for (int a = 1; a <= n; a++) {
    for (int b = a; b <= n; b++) {
      int c = n - a - b;
      if (c < b) break;
      cout << a << " " << b << " " << c << endl;
    }
  }
  
  
  return 0;
}