#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;
using ll = long long;

#include<map>
int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n,m;
    cin>>n>>m;
    vector<ll> a(n),b(m),c(n);
    for(int i = 0;i<n;i++) cin>>a[i];
    for(int i = 0;i<m;i++) cin>>b[i];
    for(int i = 0;i<n;i++) cin>>c[i];
    ll sum = 0;
    for(int i = 0;i<n;i++) sum += c[i];
    ll ans = sum;
    map<ll,ll> memo;
    ll tmp = 0;
    for(int i = 0;i<n;i++){
        if(i>0){
            tmp += b[(i-1) % m];
        }
        memo[a[i]-tmp] += c[i];
    }
    for(auto&itr:memo) ans = min(ans,sum-itr.second);
    cout<<ans<<endl;
}