func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 1e9 + 100;   const int MX = 200503;   int N, M, k;   int arr[MX];   int cnt[MX];   vector<int> G[MX];   int vis[MX];   vector<int> sr;   void dfs(int x) {     vis[x] = 1;     for (int i = 0; i < G[x].size(); i++) {       int ch = G[x][i];       if (vis[ch] == 1) {         sr.push_back(ch);       } else if (!vis[ch])         dfs(ch);     }     vis[x] = 2;   }   int get(int x, int p) {     int ret = arr[x];     vis[x] = 1;     for (int i = 0; i < G[x].size(); i++) {       int ch = G[x][i];       if (vis[ch]) continue;       ret = min(ret, get(ch, x));     }     return ret;   }   int main() {     scanf( %d , &N);     for (int i = 1; i <= N; i++) {       scanf( %d , &arr[i]);     }     for (int i = 1; i <= N; i++) {       int x;       scanf( %d , &x);       G[i].push_back(x);     }     long long an = 0;     for (int i = 1; i <= N; i++)       if (vis[i] == 0) dfs(i);     memset(vis, 0, sizeof vis);     for (int i = 0; i < sr.size(); i++) an += get(sr[i], -1);     cout << an <<   n ;     return 0;   }   