import itertools
N,M = map(int,input().split())
glaph = [[0 for i in range(N)] for j in range(N)]
for m in range(M):
	a,b = set(map(int,input().split()))
	glaph[a][b] = 1
	glaph[b][a] = 1
A = [i for i in range(N)]
C = list(itertools.combinations(A,4))
num = 0
for c in C:
	side =[0,0,0,0]
	for i,k in enumerate(c):
		count = 0
		for m in c:
			if glaph[k][m] == 1:
				count = count + 1
		side[i] = count
	if side.count(2) == 4:
		num = num + 1
print(num)