#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	vector<vector<int>> g(n, vector<int>(n));
	for (int i = 0; i < m; i++) {
		int a, b;
		cin >> a >> b;
		g[a][b] = g[b][a] = 1;
	}
	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++) {
					int d1 = g[i][j] + g[i][k] + g[i][l];
					int d2 = g[j][i] + g[j][k] + g[j][l];
					int d3 = g[k][i] + g[k][j] + g[k][l];
					int d4 = g[l][i] + g[l][j] + g[l][k];
					if (d1 == 2 && d2 == 2 && d3 == 2 && d4 == 2) cnt++;
				}
			}
		}
	}
	cout << cnt << endl;
	return 0;
}