import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // 人数
        int n;
        // お菓子の種類
        int k;
        
        Scanner sc = new Scanner(System.in);
        
        n = sc.nextInt();
        k = sc.nextInt();
        
        boolean[] has = new boolean[n + 1];
        
        for (int i = 0; i < k; i++) {
            int d = sc.nextInt();
            
            for (int j = 0; j < d; j++) {
                has[sc.nextInt()] = true;
            }
        }
        
        int ans = 0;
        for (int i = 1; i < has.length; i++) {
            if (!has[i]) {
                ans++;
            }
        }
        
        System.out.println(ans);
    }
}
/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