N,M = map(int,input().split())
nodes = [list(map(int,input().split())) for i in range(M)]
n_dic = {}

for nod in nodes:
    for i in range(2):
        n_dic.setdefault(nod[i],[])
        n_dic[nod[i]].append(nod[1-i])

cnt = 0
for key,val in n_dic.items():
    len_v = len(val)
    if len_v<2:
        continue
    for i in range(len_v-1):
        val1 = val[i]
        child1 = n_dic[val1]
        for j in range(i+1,len_v):
            val2 = val[j]
            child2 = n_dic[val2]
            if val1 in child2 or val2 in child1:
                continue
            for k in set(child1)&set(child2):
                if k==key:
                    continue
                if key not in n_dic[k]:
                    cnt+=1
print(cnt//4)