//B
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 snk[] = new int[n];
		for (int i = 0; i < n; i++) {
			snk[i] = 0;
		}
		
		for (int i = 0; i < k; i++) {
			int d = sc.nextInt();
			for (int j = 0; j < d; j++) {
				int a_id = sc.nextInt();
				snk[a_id - 1] = 1;
			}
		}
		
		int count = 0;
		for (int l = 0; l < n; l++) {
			if (snk[l] == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
}
/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