#include "triangles.h"
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
#define asc(x) x.begin(), x.end()
#define des(x) x.rbegin(), x.rend()
#define pb push_back
#define eb emplace_back
#define ll long long
#define db long double
#define fori(a, b) for (int i = (a); i < (b); ++i)
#define forj(a, b) for (int j = (a); j < (b); ++j)

using namespace std;
// using namespace __gnu_pbds;
// using ordered_set = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;


std::vector<std::vector<int>> solve(int n) {
    return {{0, 1, 2 ,3}};
}
