#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include <sstream>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;

int f[55][55];

int main() {
	
	int n, m;
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int a, b;
		cin >> a >> b;
		//a--; b--;

		f[a][b] = 1;
		f[b][a] = 1;

	}

	int y = 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 h = k + 1; h < n; h++) {
					int a, b, c, d;
					a = f[i][j] + f[i][k] + f[i][h];
					b = f[j][i] + f[j][k] + f[j][h];
					c = f[k][j] + f[k][i] + f[k][h];
					d = f[h][j] + f[h][k] + f[h][i];
					//cout << a << b << c << d << endl;
					if (a == 2 && b == 2 && c == 2 && d == 2)y++;
				}
			}
		}
	}
	cout << y << endl;

	return 0;
}