#include <iostream>
#include <cstring>

using namespace std;

int N, M;
bool graph[51][51];

int main()
{
    cin >> N >> M;

    memset(graph, false, sizeof(graph));

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

    int ans = 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++)
                {
                    if (graph[i][j] + graph[i][l] + graph[i][k] != 2)
                        continue;
                    if (graph[j][i] + graph[j][l] + graph[j][k] != 2)
                        continue;
                    if (graph[k][i] + graph[k][l] + graph[k][j] != 2)
                        continue;
                    if (graph[l][i] + graph[l][j] + graph[l][k] != 2)
                        continue;
                    ans++;
                }
            }
        }
    }

    cout << ans << endl;
}