import java.util.*;
class Main{
public static void main(String[]args){
Scanner sc=new Scanner(System.in);
  int n=sc.nextInt(),k=sc.nextInt();
  int po[]=new int[n];
  for(int i=0;i<k;i++){
      int d=sc.nextInt();
      for(int j=0;j<d;j++){
          po[sc.nextInt()-1]++;
      }
  }
  int sum=0;
  for(int i=0;i<n;i++){
    if(po[i]==0)sum++;
  }
  System.out.println(sum);
}
}
/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