import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		try(Scanner sc = new Scanner(System.in)) {

			int n = sc.nextInt();
			int k = sc.nextInt();
			
			int[] sunukes = new int[n+1]; 
			
			for(int i = 0 ; i < k ; i++ ) {
				int di = sc.nextInt();
				for(int j = 0 ; j < di ; j++ ) {
					int a = sc.nextInt();
					sunukes[a] = 1;
				}
			}
			
			int haves = Arrays.stream(sunukes).sum();
			System.out.println(n - haves);
		}
	}

}
/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