using System;
using System.Collections.Generic;
using System.Linq;
using static System.Console;
using static System.Math;

class MainClass : Scanner
{
    static void Main()
    {
        var (N, M) = ReadStream<int, int>();

        var dat = new (long cost, int key)[M];
        for (int i = 0; i < M; i++)
        {
            var r = ReadStream<long,long>();
            var C = RInts();
            var k = 0;
            foreach (var j in C)
            {
                k += (1 << (j - 1));
            }
            dat[i] = (r.Item1, k);
        }

        var dp = new long[M+1, (1 << N)];
        for (int i = 0; i < M+1; i++)
        {
            for (int j = 0; j < (1<<N); j++)
            {
                dp[i, j] = long.MaxValue;
            }
        }
        dp[0, 0] = 0;
        for (int i = 0; i < M; i++)
        {
            for (int j = (1<<N)-1; j >= 0; j--)
            {
                if (dp[i, j] == long.MaxValue) continue;
                var nk = (j | dat[i].key);
                var nc = dp[i, j] + dat[i].cost;
                dp[i + 1, nk] = Min(dp[i + 1, nk], nc);
                dp[i + 1, j] = Min(dp[i + 1, j], dp[i, j]);
            }
        }
        if (dp[M, (1 << N)-1] == long.MaxValue) WriteLine(-1);
        else WriteLine(dp[M, (1 << N)-1]);
    }
}

class Scanner
{
    public static int RInt() => int.Parse(Console.ReadLine());
    public static long RLong() => long.Parse(Console.ReadLine());
    public static string RString() => Console.ReadLine();
    public static double RDouble() => double.Parse(Console.ReadLine());

    public static int[] RInts() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
    public static int[] RInts(Func<string, int> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static long[] RLongs() => Array.ConvertAll(Console.ReadLine().Split(), long.Parse);
    public static long[] RLongs(Func<string, long> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static double[] RDoubles() => Array.ConvertAll(Console.ReadLine().Split(), double.Parse);
    public static double[] RDoubles(Func<string, double> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static string[] RStrings() => Console.ReadLine().Split();
    //public static string[] RStrings(Func<string, string> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static T1 ReadStream<T1>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        return r1;
    }
    public static (T1, T2) ReadStream<T1, T2>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        return (r1, r2);
    }
    public static (T1, T2, T3) ReadStream<T1, T2, T3>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[2], typeof(T3));
        return (r1, r2, r3);
    }
    public static (T1, T2, T3, T4) ReadStream<T1, T2, T3, T4>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[0], typeof(T3));
        var r4 = (T4)Convert.ChangeType(r[0], typeof(T4));
        return (r1, r2, r3, r4);
    }
}

Measured memory_bytes: 60100