50 50
75 71 23 37 28 23 69 75 5 62 3 11 96 100 13 50 57 51 8 90 4 6 84 27 11 89 95 81 10 62 48 52 69 87 97 95 30 74 21 42 36 64 31 80 81 50 56 53 33 99
26 30 5 33 35 29 6 15 36 17 32 16 14 1 29 34 22 40 12 42 38 48 39 50 13 47 18 43 10 8 49 45 11 31 21 37 46 28 20 41 2 7 9 24 27 23 3 44 15 14
 10 10
61 59 97 16 2 94 57 48 91 93
2 8 6 5 3 1 3 4 9 10
 2 1
1 2
1
 3 3
10 20 30
1 2 3
 50 60
86 57 45 93 17 12 40 10 47 80 18 80 3 9 6 55 13 99 5 76 4 70 100 55 27 91 71 3 65 93 41 74 80 56 90 50 58 13 71 9 47 52 26 73 72 21 15 81 88 28
40 32 5 16 49 23 3 17 14 10 1 15 1 21 28 22 13 45 12 25 44 48 46 32 36 43 11 8 49 7 7 35 10 14 39 4 42 10 30 27 1 17 31 15 8 41 44 33 25 26 19 18 29 37 50 6 36 38 47 9
 2 7
20 30
1 1 1 2 2 2 2
 2 2
10 12
2 1
 5 1
16 87 36 16 81
3
 2 3
20 30
1 1 1
 2 10
39 26
1 1 2 2 2 2 2 2 1 2

63929
 2137
 0
 40
 62514
 20
 12
 0
 0
 104

import java.util.HashMap;
import java.util.Map;
import java.util.*;

public class bookstack {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String[] bw = sc.nextLine().split(" ");

		int b = Integer.valueOf(bw[0]);
		int w = Integer.valueOf(bw[1]);
		String[] arr = sc.nextLine().split(" ");

		Map<Integer, Integer> mapi = new HashMap<Integer, Integer>();

		int i = 1;
		for (String xx : arr) {
			int x = Integer.valueOf(xx);
			mapi.put(i, x);
			i++;
		}

		String[] ord = sc.nextLine().split(" ");
		Stack<Integer> ss = new Stack<Integer>();
		int bbb[] = new int[b + 1];
		for (String st : ord) {
			int tempo = Integer.valueOf(st);
			if (bbb[tempo] == 0) {
				ss.push(tempo);
				bbb[tempo] = 1;
			}

		}
		Stack<Integer> s1 = new Stack<Integer>();
		while (!ss.isEmpty()) {
			s1.push(ss.pop());
		}
		int sum = 0;
		for (int m = 1; m < ord.length; m++) {
			int cur = Integer.valueOf(ord[m]);

			int temp = 0;
			int wwt = 0;
			Stack<Integer> s2 = new Stack<Integer>();
			int bl = -1;
			while (temp != cur && !s1.isEmpty()) {
				wwt += temp;
				temp = s1.pop();
				if (temp == cur)
					bl = temp;
				else
					s2.push(temp);
			}

			while (!s2.isEmpty()) {
				s1.push(s2.pop());
			}
			if (bl != -1)
				s1.push(bl);

			sum += wwt;
		}

		System.out.println(sum);

	}

}
