N,M=map(int,input().split())
D=[[int(i==j)*2 for i in range(N)]for j in range(N)]
for _ in range(M):a,b=map(int,input().split());D[a][b]=D[b][a]=1
G={}
for x in D: G[x.index(2)]=[i for i in range(N) if x[i]==1]
a=0
for k,v in G.items():
 for i in range(len(v)):
  for j in range(i+1,len(v)):
   if D[v[i]][v[j]]==1:continue
   for c in set(G[v[i]])&set(G[v[j]]):a+=(k!=c and k not in G[c])
print(a//4)