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 p in v:
  for q in v:
   P,Q=Z[p],Z[q];A+=sum([(p<q and q not in P and h!=c and h not in Z[c])for c in set(P)&set(Q)])
print(A//4)