#include<fstream>
#include<cstdio>
#include<bitset>
using namespace std;
int n,m,A[66000],B[66000],sol;
bitset <4100> G[4100],nr;
int main()
{
	int i,x,y;
	freopen("triplete.in","r",stdin);
	scanf("%d %d",&n,&m);
	for(i=1;i<=m;i++)
	{
		scanf("%d %d",&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();
	}
	freopen("triplete.out","w",stdout);
	printf("%d\n",sol);
	return 0;
}