#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    int n;
    cin>>n;
    vector<ll> a(2*n),b(2*n),x(n),y(n);
    for(int i = 0;i<2*n;i++) cin>>a[i];
    for(int i = 0;i<2*n;i++) cin>>b[i];
    for(int i = 0;i<n;i++) cin>>x[i];
    for(int i = 0;i<n;i++) cin>>y[i];
    ll ans = 0;
    for(int i = 0;i<n;i++){
        ans += max(a[2*i]+a[2*i+1]+x[i],max(b[2*i]+b[2*i+1]+x[i],max(a[2*i]+b[2*i+1],a[2*i+1]+b[2*i])+y[i]));
    }
    cout<<ans<<endl;
}