xsadhxgjvxawh

#include<bits/stdc++.h>
using namespace std;
int main()
{
    freopen("D6T2.in","r",stdin);
    freopen("D6T2.out","w",stdout);
    
	long long n;
    cin>>n;
    vector<int> a(n);
    vector<long long> b(n);
    long long t;
    cin>>t;
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
    }
    for(int i=0;i<n;i++)
    {
        cin>>b[i];
    }
    long long x;
    long long sum=0;
    while(t--)
    {
        cin>>x;
        for(int i=0;i<n;i++)
        {
            if(x>a[i])
            {
                sum+=b[i];
            }
        }
    }
    cout<<sum;
    
    fclose(stdin);
    fclose(stdout);
}