#include <fstream>
#define Imax 4105
#define NMax 66000
using namespace std;

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

int Iorgu[Imax][Imax/(1<<5)], stanga[NMax], dreapta[NMax];
int n,m,x,y,sol;

int CountBiti (int arg)
{
	int ret=0;
	while (x)
	{
		ret++;
		x-=(x&(-x));
	}
	return ret;
} 
void Read()
{
	in>>n>>m;
	for (int i=1;i<=m;i++)
	{
		in>>st[i]>>dr[i];
		if (st[i]>dr[i])
		{
			swap(st[i],dr[i]);
		}
		Iorgu[st[i]][dr[i]/(1<<5)]+=(1<<((dr[i]-1)%(1<<5)));
	}
}
void Solve()
{
	for (int i=1;i<=m;i++)
	{
		for (int j=0;j<=n/(1<<5);j++)
		{
			sol+=CountBiti(((Iorgu[st[i]][j])&(Iorgu[dr[i]][j])));
		}
	}
}
void Print()
{
//WOW
//MUCH FUNCTION
	out<<sol;
//SUCH PROGRAMMING. WOW
}
int main()
{
	Read();
	Solve();
	Print();
	return 0;
}