import java.util.*;
import java.io.*;
class Main{
	private static final BufferedReader br =
		new BufferedReader(new InputStreamReader(System.in));
	private static final PrintWriter out =
		new PrintWriter(System.out);
	public static void main(String[] args)throws IOException{

		String[] str = br.readLine().split(" ");
		int N = Integer.parseInt(str[0]);
		int M = Integer.parseInt(str[1]);
		str = br.readLine().split(" ");
		int[] A = new int[N];
		for(int i=0;i<N;i++)
			A[i] = Integer.parseInt(str[i]);
		str = br.readLine().split(" ");
		int[] B = new int[M];
		for(int i=0;i<M;i++)
			B[i] = Integer.parseInt(str[i]);
		str = br.readLine().split(" ");
		int[] C = new int[N];
		for(int i=0;i<N;i++)
			C[i] = Integer.parseInt(str[i]);
		HashMap<Long,Long> map = new HashMap<>();
		long now = A[0];
		map.put(0L,(long)C[0]);
		for(int i=1;i<N;i++){
			now += B[(i-1)%M];
			map.merge(now-A[i],(long)C[i],Long::sum);
		}
		long sumC = 0;
		for(long num:C)
			sumC += num;
		long max = 0;
		for(long num:map.values())
			max = Math.max(num,max);
		out.println(sumC-max);

		br.close();
		out.close();
	}
}