import java.util.Scanner;

public class Main {

	public static void main(String[] arg) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int k = scan.nextInt();
		boolean[] res = new boolean[n];
		int result = 0;
		for(int i = 0; i < k; i++){
			int d = scan.nextInt();
			for(int j = 0; j < d; j++){
				int a = scan.nextInt();
				res[a-1] = true;
			}
		}
		for(int i = 0; i < n; i++){
			if(res[i] == false)result++;
		}
		System.out.println(result);
	}
}

/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