import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

public class Main{

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);

		String[] tmp = scanner.nextLine().split(" ");
		long n = Long.parseLong(tmp[0]);
		long k = Long.parseLong(tmp[1]);
		Set<Integer> map = new HashSet<>();

		int num = 0;
		for(int i = 0; i < k; i++) {

			int now = Integer.parseInt(scanner.nextLine());
			String[] temp = scanner.nextLine().split(" ");
			for(int j = 0; j < now; j++) {

				num = Integer.parseInt(temp[j]);
				if(!map.contains(num)) map.add(num);


			}


		}

		System.out.println(n - map.size());


	}

}

/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