import java.util.Scanner;
public class Main{
    public static void main(String[]args){
        Scanner s = new Scanner(System.in);


//        s= new Scanner(
//                "3 2\n" +
//                "2\n" +
//                "1 3\n" +
//                "1\n" +
//                "3");
//
//        s=new Scanner("3 3\n" +
//                "1\n" +
//                "3\n" +
//                "1\n" +
//                "3\n" +
//                "1\n" +
//                "3");

        int N = s.nextInt();
        int K = s.nextInt();
        boolean[] ppl = new boolean[N];

        s.nextLine();

        for(int i=0; i<K; i++) {
            int quantity = s.nextInt();
            s.nextLine();
            for(int j=0; j<quantity; j++) {
                int idx = s.nextInt();
                ppl[idx-1] = true;
            }
        }

        int count = 0;
        for(boolean b: ppl){
            if(!b)
                count++;
        }
        System.out.println(count);

    }
}
/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