#include<iostream>
using namespace std;

int n, m, ans = 0;
bool rel[50][50] = {};

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

	for (int i = 0; i < n; i++){
		for (int j = i + 1; j < n; j++){
			if (rel[i][j]){
				for (int k = j + 1; k < n; k++){
					if (!rel[j][k] && rel[i][k]){
						for (int l = i + 1; l < n; l++){
							if (!rel[i][l] && rel[j][l] && rel[k][l]){
								ans++;
							}
						}
					}
				}
			}
		}
	}

	cout << ans;

	return 0;
}