#include<stdio.h>

using namespace std;


bool v[1<<12][1<<12];
int n,nr;

inline void schimb(int &a,int &b){int c=a;a=b;b=c;}

void numara(bool a[],bool b[])
{
	for (int i=1;i<=n;i++)
		nr+=a[i]&b[i];
}

int main()
{
	freopen("triplete.in","r",stdin);
	freopen("triplete.out","w",stdout);
	int i,j,m,a,b;
	scanf("%d%d",&n,&m);
	for (i=1;i<=m;i++)
	{
		scanf("%d%d",&a,&b);
		if (a>b)
			schimb(a,b);
		v[a][b]=true;
	}
	for (i=1;i<n;i++)
		for (j=i+1;j<=n;j++)
			if (v[i][j])
				numara(v[i],v[j]);
	printf("%d",nr);
	return 0;
}