import java.util.Scanner;

public class Main{
  public static void main(String args[]){
    Scanner scan = new Scanner(System.in);
    
    int N = scan.nextInt();
    int K = scan.nextInt();
    
    int sunuke[] = new int[N];
    int num;
    
    for(int k = 0; k < K; k++){
      num = scan.nextInt();
      for(int n = 0; n < num; n++){
        if(sunuke[scan.nextInt()-1]++ == 0){
          N--;
        }
      }
    }
    
    System.out.println(N);
  }
}
/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