
import java.io.InputStream;
import java.io.PrintStream;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        solve(System.in, System.out);
    }

    static void solve(InputStream is, PrintStream os) {
        // Your code here!
        Scanner scan = new Scanner(is);
        int N = scan.nextInt();
        int K = scan.nextInt();
        HashSet<Integer> set = new HashSet<>();
        for(int i = 0; i < N; i++)
            set.add(i);

        for(int i = 0; i < K; i++) {
            int d = scan.nextInt();
            for(int j = 0; j < d; j++) {
                int A = scan.nextInt()-1;
                set.remove(A);
            }
        }

        os.println(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