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();
		int s[] = new int[n];

		for(int i = 0; i < k; i++ ) {
			int d = sc.nextInt();
			for(int j = 0; j < d; j++) {
				int tmp = sc.nextInt();
				s[tmp - 1] = 1;
			}
		}

		int ans = 0;
		for(int i = 0; i < n; i++) {
			if(s[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