#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;
using mint = modint998244353;

int main() {
  int N, M; cin >> N >> M;
  vector<ll> A(N), B(M), C(N), sum(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];
  for (int i = 0; i < N - 1; i++) sum[i + 1] = sum[i] + B[i % M];
  ll cost_all = 0;
  for (int i = 0; i < N; i++) cost_all += C[i];
  map<ll, ll> mp;
  for (int i = 0; i < N; i++) mp[A[i] - sum[i]] += C[i];
  ll ans = cost_all;
  for (auto p: mp) ans = min(ans, cost_all - p.second);
  cout << ans << endl;
  return 0;
}