#include <bits/stdc++.h>
using namespace std;

using ll = long long;
#define rep(i, n) for(ll i = 0; i < n; i++)

int main() {
	int N;
	cin >> N;
	vector<ll> a(N * 2), b(N * 2), x(N), y(N);
	rep(i, N * 2) cin >> a[i];
	rep(i, N * 2) cin >> b[i];
	rep(i, N) cin >> x[i];
	rep(i, N) cin >> y[i];
	ll ans = 0;
	rep(i, N) {
		int c = i * 2;
		int n = c + 1;
		ll s = a[c] + a[n] + x[i];
		s = max(s, b[c] + b[n] + x[i]);
		s = max(s, a[c] + b[n] + y[i]);
		s = max(s, b[c] + a[n] + y[i]);
		ans += s;
	}
	cout << ans << endl;
}