#include <bits/stdc++.h>
using namespace std;

ifstream f("triplete.in");
ofstream g("triplete.out");

const int SIZE = 4100;

int n, m, k;
bool v[SIZE][SIZE];
vector<int> a[SIZE];

void Read()
{
    int x, y;

    f >> n >> m;
    while(m--)
    {
        f >> x >> y;
        a[x].push_back(y);
        a[y].push_back(x);
        v[x][y] = v[y][x] = true;
    }
}

void Solve()
{
    for(int i = 1; i <= n - 2; ++i)
        for(auto it : a[i])
            for(auto it2 : a[it])
            {
                if(i < it && it < it2)
                    if(v[i][it2] == true)
                        ++k;
            }
    g << k << "\n";
}

int main()
{
    Read();
    Solve();
    return 0;
}