#include <iostream>

using namespace std;
int main()
{
    long long s = 0, t1, t2;
    long a[100000];
    long b[100000];
    long x[100000];
    long y[100000];
    int n, i, q, h;

    cin >> n;
    for (i = 0; i < (n << 1); i++)
    {
        cin >> a[i];
    }
    for (i = 0; i < (n << 1); i++)
    {
        cin >> b[i];
    }
    for (i = 0; i < n; i++)
    {
        cin >> x[i];
    }
    for (i = 0; i < n; i++)
    {
        cin >> y[i];
    }
    for (i = 0; i < n; i++)
    {
        q = i << 1;
        h = q + 1;
        t1 = a[q] + a[h] + x[i];
        t2 = a[q] + b[h] + y[i];
        if (t1 < t2)
            t1 = t2;
        t2 = b[q] + a[h] + y[i];
        if (t1 < t2)
            t1 = t2;
        t2 = b[q] + b[h] + x[i];
        if (t1 < t2)
            t1 = t2;
        s += t1;
    }
    cout << s << endl;
}