import java.util.*;
import java.io.*;
import java.math.*;

public class Main {

    public static void main(String[] args) throws IOException {
        StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
        PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));

        in.nextToken();
        int n = (int) in.nval;
        in.nextToken();
        int m = (int) in.nval;
        int[] board = new int[n * m];
        boolean[] board_stat = new boolean[n * m];

        int end = n * m;
        for (int i = 0; i < end; i++) {
            in.nextToken();
            board[i] = (int) in.nval;
        }

        in.nextToken();
        int people = (int) in.nval;
        int[] man = new int[people];
        for (int i = 0; i < people; i++) {
            in.nextToken();
            man[i] = (int) in.nval;
        }

        Arrays.sort(board);
        Arrays.sort(man);
        Arrays.fill(board_stat, false);

        int all = 0;
        for (int i = 0; i < people; i++) {
            for (int j = 0; j < end; j++) {
                if (board_stat[j] == false && board[j] >= man[i]) {
                    all++;
                    board_stat[j] = true;
                    break;
                }
            }
        }

        out.print(all);
        
        out.close();
    }
}