#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <queue>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
bool E[50][50];

int main()
{
	int n, m; cin >> n >> m;


	for (int i = 0; i < m; i++) {
		int a, b; cin >> a >> b;
		E[a][b] = true;
		E[b][a] = true;
	}

	int ans = 0;
	rep(a, n)rep(b, n){
		rep(c, n)rep(d, n) {
			if (a == b || a == c || a == d || b == c || b == d || c == d)continue;

			if (E[a][b] && E[a][d] && E[c][b] && E[c][d] && !E[a][c] && !E[b][d]) {
				ans++;
			}
		}
	}
	cout << ans/8 << endl;
    return 0;
}