#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001

int main(){
	
	int N,M;
	cin>>N>>M;
	vector<long long> a(N),b(M);
	rep(i,N)cin>>a[i];
	rep(i,M)cin>>b[i];
	rep(i,b.size()){
		if(b.size()==N-1)break;
		b.push_back(b[i]);
	}
	vector<long long> c(N);
	rep(i,N)cin>>c[i];
	
	b.insert(b.begin(),0LL);
	rep(i,b.size()-1){
		b[i+1] += b[i];
	}
	map<long long,long long> mp;
	long long sum = 0;
	rep(i,N){
		mp[b[i]-a[i]] += c[i];
		sum += c[i];
	}
	long long ans = sum;
	for(auto x:mp)ans = min(ans,sum - x.second);
	cout<<ans<<endl;
	return 0;
}