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

class Main{
      public static void main(String args[]){
	Scanner sc = new Scanner(System.in);
	int amt = sc.nextInt();
	int kind = sc.nextInt();
	Set<Integer> st = new HashSet<Integer>();
	for(int i=0;i<kind;i++){
	    int num = sc.nextInt();
	    for(int j=0;j<num;j++){
        int tmp = sc.nextInt();
		Integer id = new Integer(tmp);
		st.add(id);
	    }
	}
	System.out.println(amt-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