`color(#FFFFFFff)(H)color(#E7E7E7ff)(o)color(#CFCFCFff)(r)color(#B7B7B7ff)(i)color(#9F9F9Fff)(z)color(#878787ff)(o)color(#6F6F6Fff)(n)`

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

struct tp {
    int dau;
    int dai;
};

bool cmp(const tp& a, const tp& b) {
    return a.dau < b.dau;
}

int tinh(tp dth[], int n) {
    sort(dth, dth + n, cmp);

    int L = 0;
    int cuoi = dth[0].dau;

    for (int i = 0; i < n; i++) {
        int dau = dth[i].dau;
        int end = dau + dth[i].dai;

        if (dau > cuoi) L += end - dau;
        else L += max(0, end - cuoi);
        cuoi = max(cuoi, end);
    }

    return L;
}

int main() {
    int n;
    cin >> n;

    tp dth[n];

    for (int i = 0; i < n; i++) cin >> dth[i].dau;
    for (int i = 0; i < n; i++) cin >> dth[i].dai;

    int L = tinh(dth, n);
    cout << L;

    return 0;
}