import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int K = sc.nextInt();


        int[] A = new int[N];
        for (int i = 0;i < K; i++) {
            int d = sc.nextInt();
            for (int j = 0; j < d; j++) {
                int nsunuke = sc.nextInt() - 1;
                A[nsunuke] = 1;
            }
        }

        int count = 0;
        for (int i = 0;i < N; i++) {
            if(A[i] != 1) {
                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