import java.util.HashSet;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();
            HashSet<Integer> set = new HashSet<Integer>();
            for (int i = 0; i < K; i++) {
                int d = sc.nextInt();
                for (int j = 0; j < d; j++) {
                    set.add(sc.nextInt());
                }
            }
            System.out.println(N - set.size());
        }
    }
}

/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