#int(input())
#map(int, input().split())
#list(map(int, input().split()))

N, M = map(int, input().split())
to = [set() for i in range(N)]

for i in range(M):
    a, b = map(int, input().split())
    to[a-1].add(b-1)
    to[b-1].add(a-1)

ans = 0

good = [set() for i in range(N)]

for i in range(N-1):
    for j in range(i+1, N):
        if j in to[i]:
            good[i].add(j)
            good[j].add(i)
            continue
        f = 1
        for k in range(N):
            if (k-i)*(k-j) == 0:
                continue
            if k in to[i] and k in to[j]:
                f = 0
                break
        if f == 1:
            good[i].add(j)
            good[j].add(i)

ans = 0
# print(good)

for i in range(N-2):
    for j in range(i+1, N-1):
        for k in range(j+1, N):
            if i in good[j] and j in good[k] and k in good[i]:
                ans += 1
                # print(i, j, k)

print(ans)