#include<bits/stdc++.h>
using namespace std;

#define int long long
#define pb emplace_back
#define sz(v) (int)(v.size())
#define all(v) (v.begin(),v.end())

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	// freopen("input.txt","r",stdin);
	// freopen("output.txt","w",stdout);
	int n;
	cin >> n;
	for(int i = 1;i<n;i++){
		for(int j = i;j<n;j++){
					if(n-i-j >= j)
					cout << i << " " << j << " " << n-i-j << "\n";
		}
	}
	return 0;
}