#include <cstdio>
#include <cstring>
#include <algorithm>
#define Nmax 4096
#define Mmax 65539
using namespace std;
int n, m, i, j, a[Nmax][Nmax];
int sol;
struct nod
{
    int x;
    int y;
}   v[Mmax];
void citire()
{
    scanf("%d %d", &n, &m);
    for (i = 1; i <= m ; ++ i)
    {
         scanf("%d %d", &v[i].x, &v[i].y);
         a[v[i].x][v[i].y] = a[v[i].y][v[i].x] = 1;
    }
}
int main()
{
    freopen("triplete.in", "r", stdin);
    freopen("triplete.out", "w", stdout);
    citire();
    for (i = 1; i <= m ; ++ i)
    {
        for (j = 1; j <= n ; ++ j)
        if (a[v[i].x][j] && a[v[i].y][j])
        ++ sol;
    }
    printf("%d", sol / 3);
    return  0;
}