#include <iostream>
#include <fstream>
#include <bitset>
#include <vector>
#define Nmax 4105
using namespace std;

ifstream fin("triplete.in");
ofstream fout("triplete.out");
vector <short int> G[Nmax];
bitset <Nmax> BS[Nmax];
unsigned int N,M,sol;
void read()
{
    fin>>N>>M;
    for(int i=1;i<=M;i++)
    {
        int x,y;
        fin>>x>>y;
        G[x].push_back(y);
        G[y].push_back(x);
        BS[x].set(y,1);
        BS[y].set(x,1);
    }
}

void solve()
{
    for(int i=1;i<=N;i++)
    {
        for(int j=0;j<G[i].size();j++)
        {
            int vecin=G[i][j];
            sol+=(BS[i]&BS[vecin]).count();
        }
    }
    cout<<sol/6;
}

int main()
{
    read();
    solve();
    return 0;
}