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();
        ArrayList<Integer> array=new ArrayList<Integer>();
        int cnt=0;
        for(int i =0;i<k;i++) {
        		int d =sc.nextInt();
        		for(int j=0 ;j<d ;j++) {
                  int work = sc.nextInt();
                 array.add(work);
        		}
        }
        for(int i = 1 ;i<n+1;i++) { 
          if(array.contains(i) ==false) {
           cnt+=1; 
          }
        }
System.out.println(cnt);
	}
}
/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