import java.util.Scanner;
import java.util.ArrayList;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int N = scan.nextInt();
    ArrayList<Integer> ar = new ArrayList<Integer>();
    for(int i=0; i<N; i++) {
      ar.add(i+1);
    }
    int K = scan.nextInt();
    for(int i=0; i<K; i++) {
      int d = scan.nextInt();
      for(int j=0; j<d; j++) {
        int A = scan.nextInt();
        ar.remove(new Integer(A));
      }
    }
    scan.close();

    System.out.println(ar.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