import itertools

from sympy import li
N,M = map(int,input().split())
lsg = [set() for i in range(N)]
for i in range(M):
    a,b = map(int,input().split())
    lsg[a].add(b)
    lsg[b].add(a)
if N < 4:
    print(0)
    exit()
ans = 0
for i in range(N-3):
    for j in range(i+1,N-2):
        for k in range(j+1,N-1):
            for l in range(k+1,N):
                f = False
                ls = [i,j,k,l]
                lsp = itertools.permutations(ls,4)
                for p in lsp:
                    if p[0] in lsg[p[1]] and p[1] in lsg[p[2]] and p[2] in lsg[p[3]] and p[3] in lsg[p[0]]:
                        if not(p[0] in lsg[p[2]]) and not(p[1] in lsg[p[3]]):
                            f = True
                            break
                if f:
                    ans += 1
print(ans)