#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double ld;

int main()
{
    int n;
    cin >> n;
    int out = 0;
    int inp = 999999999;
    for (int i = 0; i < n; i++)
    {
        int A, B, C, D, E;
        cin >> A >> B >> C >> D >> E;

        int AB = std::min(A, B);
        int DE = std::min(D, E);

        out = AB + DE;
        inp = inp - out;

        int d = std::min(inp, D - DE);
        int cd = std::min(d, C);
        int b = std::min(cd, B);

        int a = std::min(inp, A - AB);
        int ca = std::min(a, C);
        int e = std::min(ca, E);

        out += std::max(b, e);
        inp = out;
    }

    cout << out << endl;



    return 0;
}