N,M = map(int,input().split())
G = [set() for _ in range(N+1)]
for _ in range(M):
    a,b = map(int,input().split())
    a += 1
    b += 1
    G[a].add(b)
    G[b].add(a)
ans = 0
for i in range(1,N+1):
    for j in range(i+1,N+1):
        for k in range(j+1,N+1):
            for l in range(k+1,N+1):
                s = [i,j,k,l]
                count = [0] * 4
                for t in range(4):
                    for y in range(4):
                        if t == y:continue
                        if s[y] in G[s[t]]:
                            count[t] += 1
                flag = True
                for t in count:
                    if t != 2:
                        flag = False
                        break
                if flag:
                    ans += 1
print(ans)