using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
//using System.Text;
//using System.Text.RegularExpressions;
//using System.Globalization;
//using System.Diagnostics;
using static System.Console;
using System.Numerics;
//using static System.Math;
//using pair = Pair<int, int>;

class Program
{
    static void Main()
    {
        //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().solve();
        Out.Flush();
    }
    Scanner cin = new Scanner();
    readonly int[] dd = { 0, 1, 0, -1, 0 }; //→↓←↑
    readonly int mod = 1000000007;

    int N, M;
    void solve()
    {
        int N = cin.nextint;
        int M = cin.nextint;

        var OK = new bool[N];
        for (int i = 0; i < N; i++)
        {
            OK[i] = true;
        }

        var G = new int[M];
        var H = new int[M][];
        for (int i = 0; i < M; i++)
        {
            G[i] = cin.nextint - 1;
            int r = cin.nextint;
            H[i] = cin.scanint.Select(j => j - 1).ToArray();
            OK[G[i]] = false;
        }

        for (int i = 0; i < M; i++)
        {
            for (int j = 0; j < M; j++)
            {
                if (OK[G[j]]) continue;

                bool flag = true;
                foreach (var item in H[j])
                {
                    if (!OK[item])
                    {
                        flag = false;
                        break;
                    }
                }
                if (flag)
                {
                    OK[G[j]] = true;
                }
            }
        }
        WriteLine(OK.Count(i => i));
    }

}

class Scanner
{
    string[] s; int i;
    char[] cs = new char[] { ' ' };
    public Scanner() { s = new string[0]; i = 0; }
    public string[] scan { get { return ReadLine().Split(); } }
    public int[] scanint { get { return Array.ConvertAll(scan, int.Parse); } }
    public long[] scanlong { get { return Array.ConvertAll(scan, long.Parse); } }
    public double[] scandouble { get { return Array.ConvertAll(scan, double.Parse); } }
    public string next
    {
        get
        {
            if (i < s.Length) return s[i++];
            string st = ReadLine();
            while (st == "") st = ReadLine();
            s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
            i = 0;
            return next;
        }
    }
    public int nextint { get { return int.Parse(next); } }
    public long nextlong { get { return long.Parse(next); } }
    public double nextdouble { get { return double.Parse(next); } }
}