import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
        ArrayList<HashSet<Integer>> exist = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            graph.add(new ArrayList<>());
            exist.add(new HashSet<>());
        }
        for (int i = 0; i < m; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();
            graph.get(a).add(b);
            graph.get(b).add(a);
            exist.get(a).add(b);
            exist.get(b).add(a);
        }
        int ans = 0;
        for (int i = 0; i < n - 1; i++) {
            for (int j = i + 1; j < n; j++) {
                if (exist.get(i).contains(j)) {
                    continue;
                }
                for (int a = 0; a < graph.get(i).size() - 1; a++) {
                    for (int b = a + 1; b < graph.get(i).size(); b++) {
                        if (exist.get(j).contains(graph.get(i).get(a)) && exist.get(j).contains(graph.get(i).get(b)) && !exist.get(graph.get(i).get(a)).contains(graph.get(i).get(b))) {
                            ans++;
                        }
                    }
                }
            }
        }
        System.out.println(ans / 2);
    }
}