import java.util.Scanner;
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        int x = stdIn.nextInt();
        boolean [] xx=new boolean[x];
        int y = stdIn.nextInt();
        for(int i=0;i<y;i++){
            int z = stdIn.nextInt();
            for(int t=0;t<z;t++){
               int a = stdIn.nextInt();
               xx[a-1]=true;
            }
        }
        int count=0;
        for(int i=0;i<xx.length;i++){
            if(!xx[i]){
                count++;
            }
        }
        System.out.println(count);
    }
}
/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