#include <bits/stdc++.h>

using namespace std;
int n, a[100001];
long long  b[100001], xp, ido;


int main() {
	
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    for(int i=1;i<=n;i++)
    {
        int l;
        cin>>l;
        b[a[i]]+=l;
    }
    int elso=0, utolso=100000;
    //sort(a+1, a+n+1);
    while(elso<=utolso)
    {
        if(b[elso]==0)elso++;
        else 
        {
            if(elso<=xp)
            {
                ido+=b[elso];
                xp+=b[elso];
                b[elso]=0;
                elso++;
                //cout<<ido<<" "<<elso<<" "<<xp<<endl;
            }
            else
            {
                if(b[utolso]==0)utolso--;
                else 
                {
                    long long mennyikell=elso-xp;
                    long long banyaszhato=min(mennyikell, b[utolso]);
                    ido+=2*banyaszhato;
                    xp+=banyaszhato;
                    b[utolso]-=banyaszhato;
                    if(b[utolso]==0)utolso--;
                    //cout<<ido<<" "<<utolso<<" "<<xp<<endl;
                }
            }
        }
    }
    cout<<ido;

    
    return 0;
}