import java.util.Scanner;
public class Main {
	public static void main(String[] args){

		Scanner sc = new Scanner(System.in);

		int sunukeCount = sc.nextInt();
		int okashiCount = sc.nextInt();
		int itazuraCount = 0;
		boolean[] itazuraFlag = new boolean [sunukeCount];
		for (int i = 0; i < sunukeCount; i++) {
				itazuraFlag[i] = true;
		}

		for (int i = 0; i < okashiCount; i++) {
			int dCount = sc.nextInt();
			for (int j = 0; j < dCount; j++) {
				int tmp = sc.nextInt();
				tmp--;
				itazuraFlag[tmp] = false;
			}
		}

		for (int i = 0; i < sunukeCount; i++) {
			if (itazuraFlag[i] == true) {
				itazuraCount++;
			}
		}

		System.out.print(itazuraCount);

	return;

	}
}

/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