#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  for (int a = 1; a <= n; ++a) {
    for (int b = a; a + b <= n; ++b) {
      int c = n - a - b;
      if (b <= c) cout << a << ' ' << b << ' ' << c << '\n';
    }
  }
  return 0;
}