import java.util.*;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		int[] a = new int[n];
		for(int i = 0; i < k; i++){
			int d = sc.nextInt();
			for(int j = 0; j < d; j++){
				a[sc.nextInt()-1] += 1;
			}
		}
		int num = 0;
		for(int e : a){
			if(e == 0)num += 1;
		}
		System.out.println(num);
	}
	
}
/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