#include <bits/stdc++.h>

using namespace std;

const int64_t INF = INT64_C(1) << 60;

template <typename T>
bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int W;
  cin >> W;
  vector<int64_t> A(W), B(W), C(W);
  for (int i = 0; i < W; i++) {
    cin >> A[i] >> B[i] >> C[i];
  }
  function<void(int, int, int64_t, int64_t, vector<pair<int64_t, int64_t>> &)> dfs =
      [&](int now, int end, int64_t money, int64_t love, vector<pair<int64_t, int64_t>> &vec) {
        if (now == end) {
          vec.emplace_back(make_pair(money, love));
          return;
        }
        dfs(now + 1, end, money + A[now], love, vec);
        if (now + 1 < end) dfs(now + 2, end, money - C[now + 1], love + B[now + 1], vec);
      };
  auto solve = [&](int w) {
    vector<pair<int64_t, int64_t>> A, B;
    dfs(0, w, 0, 0, A);
    dfs(w, W, 0, 0, B);
    sort(A.begin(), A.end());
    sort(B.begin(), B.end());
    for (int i = (int)A.size() - 2; i > -1; i--) {
      chmax(A[i].second, A[i + 1].second);
    }
    for (int i = (int)B.size() - 2; i > -1; i--) {
      chmax(B[i].second, B[i + 1].second);
    }
    int64_t res = 0;
    for (int i = 0; i < (int)A.size(); i++) {
      auto itr = lower_bound(B.begin(), B.end(), make_pair(-A[i].first, -INF));
      if (itr != B.end()) res = max(res, itr->second + A[i].second);
    }
    return res;
  };
  cout << max(solve(W / 2), solve(W / 2 + 1)) << '\n';
  return 0;
}