#include<cstdio>
#include<bitset>
using namespace std;
const int NMAX= 4100;
int n,m,i,x,y,a[NMAX],b[NMAX];
long long sol;
bitset<NMAX> v[NMAX];
int main()
{
	freopen("triplete.in","r",stdin);
	freopen("triplete.out","w",stdout);
	scanf("%d%d",&n,&m);
	for(i=1;i<=m;i++)
	{
	    scanf("%d%d",&x,&y);
	    a[i]=x; b[i]=y;
	    v[x][y]=v[y][x]=1;
	}
    for(i=1;i<=m;i++)
        sol+=(v[a[i]]&v[b[i]]).count();
    printf("%lld\n",sol/3);
	return 0;
}