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

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		int n = kb.nextInt();
		int k = kb.nextInt();
		ArrayList<Integer> a = new ArrayList<Integer>();
		for (int i = 0; i < k; i++) {
			int d = kb.nextInt();
			for (int j = 0; j < d; j++) {
				int l = kb.nextInt();
				a.add(l);
			}
		}
		int count = n;
		for (int i = 1; i <= n; i++) {
			for (int e : a) {
				if (i == e) {
					count -= 1;
					break;
				}
			}
		}
		System.out.println(count);

		kb.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