#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("sse4,avx,avx2,fma")
using namespace std;
const char nl = '\n';
using ll = long long;
using vi = vector<int>;
using vl = vector<ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using str = string;
using vpii = vector<pii>;
using vpll = vector<pll>;
template <class T>
inline bool ckmin(T& a, T b) {
  return b < a ? a = b, 1 : 0;
}
template <class T>
inline bool ckmax(T& a, T b) {
  return b > a ? a = b, 1 : 0;
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
str to_string(char c) { return str(1, c); }
str to_string(bool b) { return b ? "true" : "false"; }
str to_string(const char* second) { return (str)second; }
str to_string(str second) { return second; }
template <class A>
str to_string(complex<A> c) {
  stringstream ss;
  ss << c;
  return ss.str();
}
str to_string(vector<bool> v) {
  str res = "{";
  for (int i = 0; i < (int)v.size(); i++) res += char('0' + v[i]);
  res += "}";
  return res;
}
template <size_t SZ>
str to_string(bitset<SZ> b) {
  str res = "";
  for (int i = 0; i < b.size(); i++) res += char('0' + b[i]);
  return res;
}
template <class A, class B>
str to_string(pair<A, B> p);
template <class T>
str to_string(T v) {
  bool fst = 1;
  str res = "{";
  for (const auto& x : v) {
    if (!fst) res += ", ";
    fst = 0;
    res += to_string(x);
  }
  res += "}";
  return res;
}
template <class A, class B>
str to_string(pair<A, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
void DBG() { cerr << "]" << endl; }
template <class H, class... T>
void DBG(H h, T... t) {
  cerr << to_string(h);
  if (sizeof...(t)) cerr << ", ";
  DBG(t...);
}
const int mxn = 2e5 + 10;
int c[mxn], a[mxn], n, vis[mxn], cur[mxn], color[mxn], cnt = 0;
vector<int> q;
map<int, vector<int>> colors;
ll ans = 0;
void dfs(int u) {
  vis[u] = 1;
  cur[u] = 1;
  q.push_back(u);
  0;
  if (vis[a[u]] && !cur[a[u]]) {
  } else if (vis[a[u]] && cur[a[u]]) {
    bool start = 0;
    q.push_back(a[u]);
    0;
    for (int i : q) {
      if (i == a[u]) start = 1;
      if (start) color[i] = cnt;
    }
    cnt++;
  } else {
    dfs(a[u]);
  }
  cur[u] = 0;
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  memset(color, -1, sizeof(color));
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> c[i];
  }
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    a[i]--;
  }
  for (int i = 0; i < n; i++) {
    if (!vis[i]) {
      dfs(i);
      q.clear();
    }
  }
  for (int i = 0; i < n; i++) {
    0;
    if (color[i] != -1) colors[color[i]].push_back(i);
  }
  0;
  for (auto& w : colors) {
    int mi = 1e9;
    for (int i : w.second) {
      ckmin(mi, c[i]);
    }
    ans += mi;
  }
  cout << ans << nl;
}
