import java.util.*;

public class Main{
	public static void main(String arga[]){
		
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int c = sc.nextInt();
		
		int[] b = new int[a];
		int[] d = new int[c];
		
		int ans =0;
		
		
		boolean[] z = new boolean[a];
		
		for(int i= 0;i<c;i++){
			d[i] = sc.nextInt();
			
			for(int n=0;n<d[i];n++){
				b[n] = sc.nextInt();
				z[b[n]-1] = true;  /*ここを-1にしなければ、z[0]にtrueが入ることがなくなる*/
			}
		}
		
		
		 for(int j = 0; j < a; j++) {
        	if(z[j] == false) ans++; 
        }
		System.out.println(ans);
		
	}
}

	
		
/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