import java.util.ArrayList;
import java.util.Scanner;

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

		Scanner sc = new Scanner(System.in);

		int human = sc.nextInt();
		int okashi = sc.nextInt();
		int cnt = 0;

		ArrayList<Integer> list = new ArrayList<>();

		for(int i = 1; i <= human; i++){
			list.add(i);
		}

		for(int i = 0; i < okashi; i++){
			cnt = sc.nextInt();
			for(int j = 0; j < cnt; j++){
				list.remove((Object)sc.nextInt());
			}
		}

		System.out.println(list.size());

		sc.close();
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz