Shared code

#include <algorithm>
#include <array>
#include <bits/stdc++.h>

using namespace std;

#define in(a)                                                                  \
  for (auto &x : a)                                                            \
    cin >> x;
#define out(a)                                                                 \
  for (auto x : a)                                                             \
    cout << x << " ";
#define pb push_back
#define int long long
#define ll long long
typedef vector<ll> vi;
typedef pair<ll, ll> pii;

int dp[200002];

void solve() {
  int n;
  cin >> n;
  vector<array<int, 3>> v;
  for (int i = 0; i < n; i++) {
    int start, end, score;
    cin >> start >> end >> score;
    v.push_back({start, end, score});
    dp[i] = -1;
  }
  sort(v.begin(), v.end(),
       [](array<int, 3> &a, array<int, 3> &b) { return a[0] < b[0]; });

  for (int i = n - 1; i >= 0; i--) {
    int next = upper_bound(v.begin(), v.end(), v[i],
                           [](const array<int, 3> &a, const array<int, 3> &b) {
                             return a[1] < b[0];
                           }) -
               v.begin();
    dp[i] = max(dp[next] + v[i][2], dp[i + 1]);
  }
  cout << dp[0] << '\n';
}

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);

  int t = 1;
  // cin >> t;

  while (t--) {
    solve();
  }

  return 0;
}