#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <list>
#include <set>
#include <map>
#include <numeric>
#include <regex>
#include <tuple>
#include <iomanip>
#include <cmath>
using namespace std;

typedef long long ll;
typedef pair<int, int> P;
#define MOD 1000000007 // 10^9 + 7
#define INF 1000000000 // 10^9
#define LLINF 1LL<<60


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int N; cin >> N;
	for (int a = 1; a <= N; a++) {
		for (int b = 1; b <= N - a; b++) {
			int c = N - a - b;
			if (c >= 1 && a <= b && b <= c) cout << a << " " << b << " " << c << endl;
		}
	}


	return 0;
}