#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#define DEBUG(x) cout<<#x<<" = "<<x<<endl
using namespace std;
const int MAXN=2e5+10;
int N;
vector<int>G[MAXN];
int cost[MAXN];
int vis[MAXN];
int cv=-1;
int mc;
int csum=0;
void dfs(int u)
{if(vis[u]==1){cv=u;mc=cost[u];return;}vis[u]=1;for(int i=0;i<G[u].size() ;i++ ){int v=G[u][i];dfs(v);}if(cv!=-1){if(cv==u){csum+=mc;cv=-1;}else mc=min(mc,cost[u]);}
}
int main()
{
//    freopen("in.txt","r",stdin);scanf("%d",&N);for(int i=1;i<=N ;i++ ){scanf("%d",&cost[i]);}for(int i=1;i<=N ;i++ ){int e;scanf("%d",&e);G[i].push_back(e);}for(int u=1;u<=N ;u++ ){if(vis[u]==0){dfs(u);cv=-1;}}printf("%d\n",csum);
}