#include<fstream.h>
//#define N 4000


int main() {
	ifstream f("triplete.in");
	ofstream g("triplete.out");
	
	unsigned int n,m,a[200][200],i,j,k,c=0;;
	 
	f>>n>>m;
	for(i=1;i<n;i++)
		for(j=i+1;j<=n;j++)
			a[i][j]=a[j][i]=0;
	
	for(k=1;k<=m;k++) {f>>i>>j; a[i][j]=a[j][i]=1;}

	for(i=1;i<n-1;i++)
			for(j=i+1;j<n;j++)
					for(k=j+1;k<=n;k++)
						if(a[i][j]==1 && a[j][k]==1 && a[k][i]==1) 
						c++;
	g<<c;
	return 0;
}