import java.util.*;
public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    int[] b = new int[n];
    for(int i=0;i<k;i++) {
      int d = sc.nextInt();
      int[] a = new int[d];
      for(int j=0;j<d;j++){
        a[j]  = sc.nextInt();
        int c = a[j];
		b[c-1] = 1;
      }      
    }
    int count = 0;
    for(int x=0;x<b.length;x++) {
      if(b[x]==0) {
      count = count + 1;
      }
    }
    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