import itertools
X=list()
Y=list()
N,M=map(int,input().split())
L=[[] for j in range(N)]
R=[[] for j in range(N)]
for i in range(M):
    x,y=map(int,input().split())
    L[x-1].append(y)
    L[y-1].append(x)
for i in range(N):
    for j in range(len(L[i])):
        R[i].extend(L[L[i][j]-1])
    R[i]=[l for l in R[i] if l not in L[i]]
R=[list(set(i)) for i in R]
ans=0
p_list = list(itertools.combinations(range(1,N+1), 3))
for i in range(len(p_list)):
  a,b,c=p_list[i]
  if b not in R[a-1] and c not in R[a-1] and b not in R[c-1]:
    ans+=1
print(ans)