#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    int n, m;
    cin >> n >> m;
    vector<long long> a(n), b(m), c(n);
    long long ans = 0;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < m; i++) {
        cin >> b[i];
    }
    for (int i = 0; i < n; i++) {
        cin >> c[i];
        ans += c[i];
    }
    vector<long long> d(n);
    for (int i = 0; i < n - 1; i++) {
        d[i + 1] = d[i] + b[i % m];
    }
    map<long long, long long> mp;
    for (int i = 0; i < n; i++) {
        mp[d[i] - a[i]] += c[i];
    }
    long long ma = 0;
    for (auto [k, v] : mp) {
        ma = max(v, ma);
    }
    ans -= ma;
    cout << ans << endl;
}