#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

ifstream fin("triplete.in");
ofstream fout("triplete.out");

vector <short> v[5000];
int n,m,i,x,y,X,j,k,nr;
bool a[4097];

int main()
{
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>x>>y;
        X=max(x,y);
        x=min(x,y);
        v[x].push_back(X);
        v[X].push_back(x);
    }
    for(i=1;i<=n;i++)
    {
        for(j=0;j<v[i].size();j++)
            a[v[i][j]]=1;
        for(j=0;j<v[i].size();j++)
        {
            int q=v[i][j];
            if(q>i)
            for(k=0;k<v[q].size();k++)
            {
                if(a[v[q][k]]==1&&v[q][k]>q)nr++;
            }
        }
        for(j=0;j<v[i].size();j++)
            a[v[i][j]]=0;
    }
    fout<<nr<<'\n';
    fin.close();
    fout.close();
    return 0;
}