#include <bits/stdc++.h>

using namespace std;

const char fin[] = "triunghi.in";
const char fout[] = "triunghi.out";

const int MAXN = 4096;

bitset<MAXN>cun[MAXN];
vector <int> lista[MAXN];

void baga (int x, int y) {
	cun[x][y] = cun[y][x] = 1;}

int main() {
	ifstream cin(fin);
	ofstream cout(fout);

	int N, M;

	cin >> N >> M;

	for (int i = 0, x, y; i < M; ++i)
	{
		cin >> x >> y;
		-- x; -- y;
		baga(x, y);
		lista[x].push_back(y);
		lista[y].push_back(x);
	}

	long long ans = 0;

	for (int i = 0; i < N ; ++i)
	{
		for(auto j : lista[i])
			ans += (cun[i] & cun[j]).count();
	}

	cout << ans / 6;
	return 0;
}