#include <iostream>
#include <algorithm>
#include <functional>
#include <string>
#include <climits>
#include <vector>
#include <numeric>
#include <complex>
#include <map>
#include <bitset>
#include <stack>
#include <queue>
#include <set>
using namespace std;

//#define __int64 long long
#define REP(i,a,b) for(int i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
const int Vec = 4;
const int Vecy[Vec] = {0,-1,0,1};
const int Vecx[Vec] = {1,0,-1,0};
const int Modd = 1000000007;

int main(){
	cin.tie(0);
    ios::sync_with_stdio(false);
	int n;
	cin >> n;
	
	for(int i=1; i<=n/3+1; i++){
		for(int j=i; j<=(n-i)/2; j++){
			int k= n - i - j;
			cout << i << " " << j << " " << k << endl;
		}
	}
	
	
    return 0;
}