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

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();

    List<Integer> sunukes = new ArrayList<>();
    int[] treat = new int[n];

    int count = 0;

    for (int i = 0; i < k; i++) {
      int d = sc.nextInt();
      for (int j = 0; j < d; j++) {
        sunukes.add(sc.nextInt());
      }
    }
    for (int sunuke : sunukes) {
      treat[sunuke - 1] = 1;
    }

    for (int num : treat) {
      if (num == 0) {
        count++;
      }
    }  

    System.out.println(count);

  }
}

/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