#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  int s = n + m, t = s + 1;
  mf_graph<ll> g(t + 1);
  rep(i, n) {
    int a;
    cin >> a;
    g.add_edge(s, i, a);
  }
  VI b(m);
  rep(i, m) cin >> b[i];
  rep(j, m) {
    g.add_edge(n + j, t, b[j]);
    int k;
    cin >> k;
    rep(_, k) {
      int c;
      cin >> c;
      c--;
      g.add_edge(c, n + j, b[j]);
    }
  }
  ll f = g.flow(s, t);
  ll ans = accumulate(all(b), 0LL) - f;
  cout << ans << '\n';
}