import java.util.*;
class Main {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int k = scan.nextInt();
        int[] ary = new int[n+1];
        int ans = 0;
        for (int i = 1; i < k+1 ; i++){
            for(int d = scan.nextInt(); d>0 ; d--){
                ary[scan.nextInt()] ++;
            }
        }
        for (int i = 1; i<=n ; i++){
            if (ary[i]==0){
                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