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

/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