
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		boolean[] res = new boolean[N];
		for (int i = 0; i < K; i++) {
			int d = sc.nextInt();
			for (int j = 0; j < d; j++) {
				int tmp = sc.nextInt();
				res[tmp - 1] = true;
			}

		}
		int output = 0;
		for (int i = 0; i < res.length; i++) {
			if (!res[i]) {
				output++;
			}
		}
		System.out.println(output);
	}
}
/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