#include <bits/stdc++.h>

using namespace std;

int n;
int a[300300];
int x[300300], y[300300];

int main() {
    
    cin >> n;
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < n; i++) cin >> x[i];
    for (int i = 0; i < n; i++) cin >> y[i];
    
    long long ans = abs(x[n - 1] - a[n - 1]) + 0ll + y[n - 1];
    for (int i = n - 2; i >= 0; i--) {
        long long d1 = abs(x[i] - a[i]) + 0ll + y[i];
        long long d2 = abs(x[i] - x[i + 1]) + 0ll + abs(y[i] - y[i + 1]);
        ans += min(d1, d2);
    }
    
    cout << ans << endl;
    
    return 0;
}