#include <fstream>
#include <vector>

using namespace std;

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

const int Dim = 5000;

using VI = vector < int >;
using VVI = vector < VI >;

VVI G;
int n,m,Viz[Dim],cnt;

int main() {

	fin >> n >> m;
	G = VVI(n+1);
	int a,b;
	for ( ;m > 0; --m) {
		fin >> a >> b;
		G[a].push_back(b);
		G[b].push_back(a);
	}
	for ( int i = 1; i <= n; ++i) 
		for ( const int & x : G[i]) {
			Viz[x] = i;
			for( const int & y : G[x])
				if ( Viz[y] == i and y != i)
						++cnt;
		}
	
	fout << cnt / 3;
	
}