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.Arrays;
import java.util.Hashtable;
import java.util.Scanner;

public class test
{
	
	public static void main(String[] args) {

	    Scanner input = new Scanner(System.in);
	    String answer1 = input.nextLine();
        
	    String[] result1 = answer1.split(" ");
	    int n= Integer.parseInt(result1[0]);
	    int t = Integer.parseInt(result1[1]);
	    
	    String answer2 = input.nextLine();
	    String[] wt = answer2.split(" ");
	    
	    String answer3 = input.nextLine();
	    String[] result3 = answer3.split(" ");
	    
	    int[] numBooks = new int[n];
	    for(int i=0; i<result3.length; i++)
	    {
	    	int bookID = Integer.parseInt(result3[i]);
	    	numBooks[bookID-1] = numBooks[bookID-1]+1;
	    }
	    
	    float[] wtCalc = new float[n];
	    for(int i=0; i<n; i++)
	    {
	    	wtCalc[i] = (float)((float)Integer.parseInt(wt[i])/numBooks[i]);
	    }
	    
	    float[] tmpWtCalc = new float[n];
	    for(int i=0; i<n; i++)
	    {
	    	tmpWtCalc[i] = wtCalc[i];
	    }
	    
	    Arrays.sort(tmpWtCalc);
	    int[] stack = new int[n];
	    for(int i=0; i<n; i++)
	    {
	    	for(int j=0; j<n; j++)
	    	{
	    		if(tmpWtCalc[i] == wtCalc[j])
	    		{
	    			stack[i] = j+1;
	    		}
	    	}
	    }
	    
	    int totalWt = 0;
	    for(int i=0; i<t; i++)
	    {
	    	int itemToRemove = Integer.parseInt(result3[i]);
	    	
	    	for(int j=0; j<n; j++)
	    	{
	    		if(itemToRemove == stack[j])
	    		{
	    			if(j!=0)
	    			{
	    				int[] tmp = new int[j];
	    				for(int k=0; k<j; k++)
	    				{
	    					tmp[k] = stack[k];
	    				}
	    				
	    				stack[0] = stack[j];
	    				for(int l=0; l<j; l++)
	    				{
	    					stack[l+1] = tmp[l];
	    					totalWt = totalWt+tmp[l];
	    				}
	    			}
		    		else
		    		{
		    			break;
		    		}
	    			break;
	    		}
	    		else
	    		{
	    			continue;
	    		}
	    	}
	    }
	    
	    System.out.print(totalWt);
	}
}