from collections import defaultdict

a = defaultdict(list)
j, p = map(int, input().split())
r = 0

for _ in range(p):
    k, v = map(int, input().split())
    a[k].append(v)
    a[v].append(k)

for e, v in a.items():
    for i in v:
        if e <= i: continue
        for k in a[i]:
            if i <= k: continue
            if k in v:
                r = r + 1
print(r)