import java.util.HashMap;
import java.util.Map;
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();
		Map<Integer,String> m = new HashMap<Integer,String>();

		for(int i = 0;i < k;i++) {
			int d = sc.nextInt();
			for(int x = 0;x < d;x++) {
				int a = sc.nextInt();
				m.put(Integer.valueOf(a), "a");
			}
		}

		System.out.println(n - m.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