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

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sunuke = Integer.parseInt(sc.next());
		int okasi = Integer.parseInt(sc.next());
		Set<Integer> count = new HashSet();

		for (int i = 0; i < okasi; i++) {
			int okasi2 = Integer.parseInt(sc.next());
			for(int j = 0; j < okasi2; j++) {
				count.add(sc.nextInt());
			}
		}

		System.out.println(sunuke - count.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