using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Globalization;
using System.Diagnostics;
using static System.Console;
using Pair = System.Collections.Generic.KeyValuePair<int, int>;

class Program
{
    static void Main()
    {
        SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().Solve();
        Out.Flush();
    }
    Scanner cin = new Scanner();
    Random rnd = new Random();
    Stopwatch sw = new Stopwatch();
    readonly int[] dd = { 0, 1, 0, -1, 0 };
    readonly int mod = 1000000007;
    readonly string alfa = "abcdefghijklmnopqrstuvwxyz";

    int N, M;
    void Solve()
    {
        N = cin.Nextint; M = cin.Nextint;
        var B = new bool[N, N];
        for (int i = 0; i < M; i++)
        {
            int a = cin.Nextint, b = cin.Nextint;
            B[a, b] = true;
            B[b, a] = true;
        }
        int cnt = 0;
        for (int i = 0; i < N; i++)
        {
            for (int j = i + 1; j < N; j++)
            {
                for (int k = j + 1; k < N; k++)
                {
                    for (int l = k + 1; l < N; l++)
                    {
                        if (B[i, j])
                        {
                            if (B[j, k] && B[k, l] && B[l, i])
                            {
                                if (!B[i, k] && !B[j, l])
                                {
                                    cnt++;
                                }
                            }
                            else if (B[j, l] && B[l, k] && B[k, i])
                            {
                                if (!B[i, l] && !B[j, k])
                                {
                                    cnt++;
                                }
                            }
                        }
                        else if (B[i, l])
                        {
                            if (B[l, j] && B[j, k] && B[k, i])
                            {
                                if (!B[i, j] && !B[k, l])
                                {
                                    cnt++;
                                }
                            }
                        }
                    }
                }
            }
        }
        WriteLine(cnt);
    }

}

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); } }
}