#include <fstream>
#include <bitset>

using namespace std;

ifstream fin("triplete.in");
ofstream fout("triplete.out");

const int NMAX = 4100;
const int PMAX = 65600;

bitset <NMAX> p[NMAX];

pair <int, int> m[PMAX];

int n, r, cnt;

int main()
{
	fin >> n >> r;
	for (int i = 1; i <= r; ++i)
	{
		fin >> m[i].first >> m[i].second;
		p[m[i].first][m[i].second] = 1;
		p[m[i].second][m[i].first] = 1;
	}

	for (int i = 1; i <= r; ++i)
		cnt += (p[m[i].first] & p[m[i].second]).count();

	fout << cnt / 3 << "\n";

	return 0;
}