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

public class Main {
    public static void main(final String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int K = sc.nextInt();
        int[] d = new int[K];
        Set<String> A = new HashSet<>();
        for (int i = 0; i < K; i++) {
            d[i] = sc.nextInt();
            for (int j = 0; j < d[i]; j++) {
                A.add(sc.next());
            }
        }
        sc.close();

        System.out.println(N - A.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