import java.util.*;

public class Main{
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Set<Integer> set = new HashSet<Integer>();
        for(int i=0;i<N;i++){
            set.add(i+1);
        }
        int K = sc.nextInt();
        int [] d = new int [K];
        for(int i=0;i<K;i++){
            d[i] = sc.nextInt();
            for(int j=0;j<d[i];j++){
                Integer[] A = new Integer[d[i]];
                A[j] = sc.nextInt();
                set.remove(A[j]);
            }
            }
            System.out.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