import java.util.Scanner;
import java.util.ArrayList;
class Main{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
 
int N = scan.nextInt();
int K = scan.nextInt();
int TT[] = new int[N];
int i, j, e, d;
int count = 0;
  for (i = 0; i < K; i++){
    d = scan.nextInt();
      for(j = 0; j < d; j++){
        e = scan.nextInt();
        TT[e-1] = 1;
        }
   }

  for (i = 0; i < N; i++){
    if (TT[i] == 0){
    count += 1;
    }
    else{
    }
  }
  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