import java.util.Map;
import java.util.Scanner;
import java.util.Set;
import java.util.HashSet;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner (System.in);
        int n = sc.nextInt(), k = sc.nextInt();
        Set <Integer> st = new HashSet <Integer> ();
        for(int i = 1; i <= k; ++i){ 
            int d = sc.nextInt();
            for(int j = 1; j <= d; ++j){
                int x = sc.nextInt();
                st.add(x);
            }
        }
        System.out.println(n - st.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