N,M=map(int,input().split())
Z=[[] for i in range(N)]
for _ in range(M):
    a,b=map(int,input().split())
    Z[a].append(b)
    Z[b].append(a)
A=0
for h in range(N):
 v=Z[h]
 for i in range(len(v)):
  for j in range(i+1,len(v)):
   p,q=v[i],v[j]
   P,Q=Z[p],Z[q]
   if q in P:continue
   for c in set(P)&set(Q):A+=(h!=c and h not in Z[c])
print(A//4)