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

using namespace std;

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

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

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