#include<stdio.h>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<utility>
#include<memory>
#include<cmath>

#define ALL(g) (g).begin(),(g).end()
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define pb push_back

using namespace std;
 
typedef long long ll;
typedef pair<int,int> P;
const int mod=1e9+7,INF=1<<30;
const double EPS=1e-12,PI=3.1415926535897932384626;
const int MAX_N=9;
const ll LINF=100000000000000000;

int main(){
  int N;
  cin >> N ;
  int a,b,c;
  a=1;
  while(a<=N/3){
    b=a;
    c=N-(a+b);
    while(a<=b && b<=c){
      cout << a << " " << b << " " << c << endl;
      b++;
      c--;
    }
    a++;
  }

  return 0;
}