#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, s = 0;
  cin >> n;
  int t = 3, c[n - 1];
  int a[n], b[n];
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n; i++) {
    cin >> b[i];
    s += b[i];
  }
  for (int i = 0; i < n - 1; i++) cin >> c[i];
  for (int i = 0; i < n - 1; i++)
    for (int j = i + 1; j < n - 1; j++) {
      if (c[i] > c[j]) {
        int temp;
        temp = c[i];
        c[i] = c[j];
        c[j] = temp;
      }
    }
  if (n - 2 == 0)
    cout << s + c[0] << endl;
  else {
    for (int i = 0; i < n - 2; i++) s += c[i];
    cout << s << endl;
  }
}
