#include <iostream>
#include <fstream>
#include <bitset>

using namespace std;
ifstream f("triplete.in");
ofstream g("triplete.out");

int n, m, sol;
bitset <4100> A[4100], X;

int main()
{
    int i, x, y, j;
    f>>n>>m;
    for(i = 1; i <= m; i++)
    {
        f>>x>>y;
        A[x][y] = A[y][x] = 1;
    }
    for(i = 1; i <= n; i++)
    {
        for(j = i+1; j <= n; j++)
        {
            if(A[i][j])
            {
                X = A[i]&A[j];
                sol += X.count();
            }
        }
    }
    g<<sol/3<<'\n';
    return 0;
}