#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}


struct FastIO{
  FastIO(){
    cin.tie(0);
    ios::sync_with_stdio(0);
  }
}fastio_beet;

//INSERT ABOVE HERE
signed main(){
  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";
    }
  }
  cout<<flush;
  return 0;
}