import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int k = scan.nextInt();
        int[] x = new int[n];
        for(int i = 0; i < k; i++){
            int d = scan.nextInt();
            for(int j = 0; j < d; j++){
                x[scan.nextInt() - 1]++;
            }
        }
        int out = 0;
        for(int i = 0; i < n; i++){
            if(x[i] == 0){
                out++;
            }
        }
        System.out.println(out);
    }
}
/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