import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		int n = scan.nextInt();
		int k = scan.nextInt();
		int have[] = new int[n];
 		
		for(int i=0;i<k;i++) {
			int d = scan.nextInt();
			for(int j=0;j<d;j++) {
				int take = scan.nextInt();
				have[take-1] = 1;
			}
		}
		
		int ans = 0;
		for(int i=0;i<n;i++) {
			if(have[i] == 0) {
				ans += 1;
			}
		}
		
		System.out.println(ans);
		
	}
}
/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