import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int k = Integer.parseInt(sc.next());
        Set<Integer> s = new HashSet<Integer>();
        for (int i = 0; i < k; i++) {
            int d = Integer.parseInt(sc.next());
            for (int j = 0; j < d; j++) {
                int a = Integer.parseInt(sc.next());
                s.add(a);
            }
        }
        int c = n - s.size();
        System.out.println(c);
    }
}
/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