#include <bits/stdc++.h>
using namespace std;

auto chmax = [](auto&& l, auto r) { return exchange(l, l < r ? r : l) < r; };

int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  auto fn = [](vector<long long> a, vector<long long> b, vector<long long> c) {
    int n = a.size();
    map<long long, long long> mp;
    for (int bt = 0; bt < 1 << n; bt += 2) {
      bool ok = true;
      for (int i = 1; i < n; ++i) {
        if (bt >> i & 1 and bt >> (i - 1) & 1) {
          ok = false;
          break;
        }
      }
      if (not ok) {
        continue;
      }
      long long sw = 0, sv = 0;
      for (int i = 0; i < n; ++i) {
        if (bt >> i & 1) {
          sw += a[i - 1] + a[i] + c[i];
          sv += b[i];
        }
      }
      chmax(mp[sw], sv);
    }
    for (auto it = begin(mp); it != end(mp); ++it) {
      if (it != begin(mp)) {
        chmax(it->second, prev(it)->second);
      }
    }
    return mp;
  };
  int n;
  cin >> n;
  vector<long long> a(n), b(n), c(n);
  for (int i = 0; i < n; ++i) {
    cin >> a[i] >> b[i] >> c[i];
  }
  long long s = accumulate(begin(a), end(a), 0LL);
  long long res = 0;
  if (n >= 2) {
    for (int m : {n / 2, n / 2 + 1}) {
      auto mp0 = fn({begin(a), begin(a) + m}, {begin(b), begin(b) + m}, {begin(c), begin(c) + m});
      auto mp1 = fn({begin(a) + m, end(a)}, {begin(b) + m, end(b)}, {begin(c) + m, end(c)});
      auto it = end(mp1);
      for (auto e : mp0) {
        while (it != begin(mp1) and e.first + prev(it)->first > s) {
          --it;
        }
        if (it != begin(mp1)) {
          chmax(res, e.second + prev(it)->second);
        }
      }
    }
  }
  cout << res << '\n';
}