import java.io.BufferedInputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;

/**
 * Created by Harry on 5/3/20.
 */
public class Main {
    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(new BufferedInputStream(System.in));
        int n = scanner.nextInt();
        int k = scanner.nextInt();
        HashSet set = new HashSet();
        for(int s=0; s<k; s++){
            int d = scanner.nextInt();
            for(int i=0; i<d; i++){
                set.add(scanner.nextInt());
            }
        }
        System.out.println(n-set.size());
    }

}

/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