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 b;
		int c;
		boolean[] a = new boolean[n];
		int ans = 0;

		for(int i = 0;i < k;i++) {
			b = scan.nextInt();
			for(int j = 0;j < b;j++) {
				c = scan.nextInt();
				a[c - 1] = true;
			}
		}

		for(int i = 0;i < n;i++) {
			if(!a[i]) {
				ans ++;
			}
		}

		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