#include <bits/stdc++.h>
#include <atcoder/all>
using ll = long long;
#define MOD 1000000007
#define Mod 998244353
const int MAX = 1000000005;
const long long INF = 1000000000000000005LL;
using namespace std;
using namespace atcoder;



int main() {
    ios::sync_with_stdio(0);cin.tie();
    int N, M;
    cin >> N >> M;
    vector<ll> A(N), B(M), C(N);
    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];
    map<ll, ll> mp;
    ll total = 0;
    for (int i = 0; i < N; i++) {
        mp[A[i] - total] += C[i];
        total += B[i % M];
    }
    ll sum = 0, ans = INF;
    for (int i = 0; i < N; i++) sum += C[i];
    for (auto [key, val] : mp) {
        ans = min(ans, sum - val);
    }
    cout << ans << endl;
}