#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; }