#include <bits/stdc++.h>

using namespace std;

int64_t segment(int64_t res, int64_t a, int64_t b, int64_t c, int64_t d, int64_t e)
{
    int64_t v1 = min(a, res); res -= v1;
    int64_t v2 = min(d, res);

    int64_t res_res = min(v1, b); v1 -= res_res; b -= res_res;
    int64_t res_tmp = min(v2, e); v2 -= res_tmp; e -= res_tmp;
    res_res += res_tmp;
    if(v1 && !v2)
    {
        v2 = min(c, v1);
        res_res += min(v2, e);
    }
    else if(!v1 && v2)
    {
        v1 = min(c, v2);
        res_res += min(v1, b);
    }

    return res_res;
}

int main(int argc, char* argv[])
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

        int64_t n; cin >> n;       

        int64_t a, b, c, d, e; cin >> a >> b >> c >> d >> e;
        int64_t res = a + d;
        res = segment(res, a, b, c, d, e);
        for(int64_t i = 1; i < n; i++)
        {
            cin >> a >> b >> c >> d >> e;
            res = segment(res, a, b, c, d, e);
        }

        cout << res << "\n";

    return 0;
}