#include <iostream>
#include <algorithm>
#include <iomanip>
#include <vector>
#include <queue>
#include <set>
#include <map>

using namespace std;
typedef long long ll;
int W;
int M;
ll a[52], b[52], c[52];
map<ll, ll> mpl, mpr;

vector<int> buf;
bool left_half;

void dfs(int c1, int c2){
    if(c1 == 0 && c2 == 0){
        int cur = (left_half ? 0 : M);
        ll money = 0, likes = 0;
        for(int i : buf) {
            if(i == 1){
                money += a[cur];
            }else{
                likes += b[cur+1];
                money -= c[cur+1];
            }
            cur += i;
        }
        if(left_half) {
            if(mpl.count(money) > 0){
                mpl[money] = max(mpl[money], likes);
            }else{
                mpl[money] = likes;
            }
        }else{
            if(mpr.count(money) > 0){
                mpr[money] = max(mpr[money], likes);
            }else{
                mpr[money] = likes;
            }
        }
    }
    if(c1 != 0){
        buf.push_back(1);
        dfs(c1-1, c2);
        buf.pop_back();
    }
    if(c2 != 0){
        buf.push_back(2);
        dfs(c1, c2-1);
        buf.pop_back();
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << setprecision(10) << fixed;
    cin >> W;
    for(int i = 0; i < W; i++) cin >> a[i] >> b[i] >> c[i];
    if(W == 1){
        cout << 0 << endl;
        return 0;
    }
    M = W/2;
    left_half = true;
    for(int i = 0; 2*i <= M; i++){
        dfs(M-2*i, i);
    }
    left_half = false;
    for(int i = 0; 2*i <= W-M; i++){
        dfs(W-M-2*i, i);
    }
    auto p = mpr.end();
    ll cur_max = 0;
    while(true){
        p--;
        cur_max = max(cur_max, p->second);
        mpr[p->first] = cur_max;
        if(p == mpr.begin()) break;
    }
    ll ans = 0;
    for(auto i : mpl){
        ll money = i.first;
        ll likes = i.second;
        auto p = mpr.lower_bound(-money);
        if(p == mpr.end()) continue;
        ans = max(ans, likes+p->second);
    }

    // 境目でデートする
    M++;
    mpl.clear(); mpr.clear();
    left_half = true;
    for(int i = 0; 2*i <= M; i++){
        dfs(M-2*i, i);
    }
    left_half = false;
    for(int i = 0; 2*i <= W-M; i++){
        dfs(W-M-2*i, i);
    }
    p = mpr.end();
    cur_max = 0;
    while(true){
        p--;
        cur_max = max(cur_max, p->second);
        mpr[p->first] = cur_max;
        if(p == mpr.begin()) break;
    }
    for(auto i : mpl){
        ll money = i.first;
        ll likes = i.second;
        auto p = mpr.lower_bound(-money);
        if(p == mpr.end()) continue;
        ans = max(ans, likes+p->second);
    }
    cout << ans << endl;
}