import java.util.Scanner;
import java.util.HashSet;
public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int sunuke = sc.nextInt();
        int kashi = sc.nextInt();
      HashSet set = new HashSet();
      int motteru = 0;
      for(int i = 0; i < kashi; i++){
        motteru = sc.nextInt();
        for(int j = 0; j < motteru;j++) set.add(sc.nextInt());
      }
        
        System.out.println(sunuke - set.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