#include<bits/stdc++.h>
using namespace std;

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

vector<int>G[5050];
short viz[5050];
short n,m;
void fa()
{
    long long sol=0;
    for(int i=1;i<=n;++i)
    {
        for(auto no:G[i])
            viz[no]=i;
        for(auto no:G[i])
            for(auto mo:G[no])
        {
            if(viz[mo]==i)
               sol++;
        }
    }
    g<<sol/6;
}
int main()
{
    f>>n>>m;
    for(int x,y,i=1;i<=m;++i)
    {
        f>>x>>y;
        G[x].push_back(y);
        G[y].push_back(x);
    }
    fa();
}