n,m=map(int,input().split())
e=[[0]*n for i in range(n)]
for i in range(m):
	a,b=map(int,input().split())
	a-=1
	b-=1
	e[a][b]=1
	e[b][a]=1
c=0
for p1 in range(n):
	for p2 in range(n):
		for p3 in range(n):
			for p4 in range(n):
				f=p1!=p2 and p1!=p3 and p1!=p4 and p2!=p3 and p2!=p4 and p3!=p4
				f&=e[p1][p2]==1
				f&=e[p2][p3]==1
				f&=e[p3][p4]==1
				f&=e[p4][p1]==1
				f&=e[p1][p3]==0
				f&=e[p2][p4]==0
				c+=f
print(c//8)