import java.util.*;

public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int K = scan.nextInt();
		int[] ar = new int[N];
		
		for(int i=0; i < K; i++){
			int a =  scan.nextInt();
			for(int j =0; j<a; j++){
				ar[scan.nextInt() - 1]++;
			}
		}

		int con =0 ;
		for(int x :ar){
			if(x == 0) con++;
		}
		System.out.println(con);

	}

}
/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