#include <bits/stdc++.h> using namespace std; #define fst(t) std::get<0>(t) #define snd(t) std::get<1>(t) #define thd(t) std::get<2>(t) using ll = long long; using P = std::tuple<int,int>; const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1}; int main(){ std::cin.tie(nullptr); std::ios::sync_with_stdio(false); int N; std::cin >> N; for(int i=1;i<=N;++i){ for(int j=i;j<=N-i;++j){ int k = N - i - j; if(i <= k && j <= k){ std::cout << i << " " << j << " " << k << std::endl; } } } }