#include<fstream>
#include<bitset>
using namespace std;
int n,m,A[66000],B[66000],sol;
bitset <4100> G[4100],nr;
int main()
{
	int i,x,y;
	ifstream fin("triplete.in");
	fin>>n>>m;
	for(i=1;i<=m;i++)
	{
		fin>>x>>y;
		if(x<y)
			G[x].set(y);
		else
			G[y].set(x);
		A[i]=x; B[i]=y;
	}
	for(i=1;i<=m;i++)
	{
		nr=(G[A[i]]&G[B[i]]);
		sol+=nr.count();
	}
	ofstream fout("triplete.out");
	fout<<sol<<"\n";
	fout.close();
	return 0;
}