N,M = map(int,input().split())
g = [[False for j in range(N)] for i in range(N)]
for i in range(M):
	a,b = map(int,input().split())
	g[a][b]=g[b][a]=True
ans = set([])
for i in range(N):
	for j in range(N):
		if i == j:
			continue
		for k in range(N):
			if i == k or j == k:
				continue
			for l in range(N):
				if i == l or j == l or k == l:
					continue
				if g[i][j] and g[j][k] and g[k][l] and g[l][i]:
					if not(g[i][k] or g[j][l]):
						ans.add(tuple(sorted([i,j,k,l])))
print(len(ans))