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

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int K = sc.nextInt();
		HashSet<Integer> list = new HashSet<Integer>();

		for (int i = 1; i <= K; i++) {
			int A = sc.nextInt();
			for (int j = 1; j <= A; j++) {
				list.add(sc.nextInt());
			}
		}

		System.out.println(N - list.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