import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        Integer d[] = new Integer[k];
        Set<Integer> num = new HashSet<>();

        for( int i=0; i<k; i++ ){
            d[i] = sc.nextInt();
            Integer a[][] = new Integer[k][d[i]];

            for( int j=0; j<d[i]; j++ ){
                 a[i][j] = sc.nextInt();
                 num.add(a[i][j]);
            }
        }

        System.out.println( n-num.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