import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner scan = new Scanner(System.in);
        boolean[] aaaaa = new boolean[scan.nextInt()];
        Arrays.fill(aaaaa,false);
        int k = scan.nextInt();
        for(;k>0;k--){
            int d = scan.nextInt();
            for(;d>0;d--){
                aaaaa[scan.nextInt()-1] = true;
            }
        }
        int aa = 0;
        for(boolean b:aaaaa){
            if(!b)aa++;
        }
        System.out.println(aa);
    }
}
/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