import java.util.Scanner;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.HashSet;

class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N=sc.nextInt();
    int K=sc.nextInt();
    int count=0;
    List<Integer> As = new ArrayList<>();
    List<Integer> Bs = new ArrayList<>();
    for (int i=1;i<=N ;i++ ) {
       As.add(i);
    }
    for(int i=0;i<K;i++){
      int d=sc.nextInt();
      for (int j=0;j<d ;j++ ) {
         Bs.add(sc.nextInt());
      }
    }
    List<Integer> Cs = new ArrayList<Integer>(new HashSet<>(Bs));
       for(int i=1;i<=N;i++){
         if(!(Cs.contains(i))){
            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