#define _USE_MATH_DEFINES
#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define MT make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define RT return
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
using vll = vector<ll>;

struct P{ ll a,b,c; };

void solve() {
    int W;
    cin >> W;
    if (W == 1) {
        cout << 0 << endl;
        return;
    }

    vll A(W), B(W), C(W);
    rep(i, W) {
        cin >> A[i] >> B[i] >> C[i];
    }

    auto g = [&](vector<P> p) {
        vi S{ 0 };
        for (int i = 1; i < sz(p); ++i) {
            int n = sz(S);
            rep(j, n) {
                int U = S[j];
                if (!(U >> j & (i - 1))) {
                    S.push_back(U | 1 << i);
                }
            }
        }

        int n = sz(S);
        // (money, likes)
        vector<pair<ll, ll> > res(n);
        rep(i, n) {
            int U = S[i];
            if (sz(p) > 0) {
                res[i].first += p[0].a;
            }
            for (int j = 1; j < sz(p); ++j) {
                if (U >> j & 1) {
                    // 前回はアルバイトができなかった
                    res[i].first -= p[j - 1].a + p[j].c;
                    res[i].second += p[j].b;
                } else {
                    res[i].first += p[j].a;
                }
            }
        }

        sort(all(res));
        // (money, likes)
        vector<pair<ll, ll> > so;
        each(r, res) {
            while (sz(so) && so.back().second <= r.second) {
                so.pop_back();
            }
            so.push_back(r);
        }
        return so;
    };

    ll ans = 0;

    auto f = [&](int n) {
        // [0, n), [n, W)
        vector<P> pre, pos;
        rep(i, n) {
            pre.push_back(P{ A[i],B[i],C[i] });
        }
        FOR(i, n, W) {
            pos.push_back(P{ A[i],B[i],C[i] });
        }

        auto L = g(pre);
        auto R = g(pos);
        each(le, L) {
            auto itri = lower_bound(all(R), pair<ll, ll>(-le.first, 0));
            if (itri == R.end()) {
                continue;
            }
            assert(le.first + itri->first >= 0);
            smax(ans, le.second + itri->second);
        }
    };

    f(W / 2);
    f(W / 2 - 1);
    cout << ans << endl;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout << fixed << setprecision(15);
	solve();
	return 0;
}