import java.util.*;

public class Main {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int k = Integer.parseInt(sc.next());
        Set<String> hash = new HashSet<>();
        for (int i = 0; i < k; i++) {
            int d = Integer.parseInt(sc.next());
            for (int j = 0; j < d; j++) {
                hash.add(sc.next());
            }

        }

        System.out.println(n - hash.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