import java.util.*;
public class Main {
	public static void main(String[] args) {
    	Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		int D = 0;
		int A = 0;
		
		
		int ans[]=new int[N+1];
		int anss = 0;
		
		for(int i=1;i<=K;i++){
			D = sc.nextInt();
			for(int j=1;j<=D;j++){
				A = sc.nextInt();
				ans[A]=1;	
			}
		}

		for(int k=1;k<=N;k++){
			if (ans[k]!=1) {
			anss=anss+1;
			}
		}

		System.out.println(anss);
    }
}
/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