from itertools import*
n,m=map(int,input().split())
g=[[0]*n for _ in[0]*n]
for _ in[0]*m:
 a,b=map(int,input().split())
 g[a-1][b-1]=g[b-1][a-1]=-1
c=0
for i,j,k,l in product(range(n),repeat=4):c+=len({i,j,k,l})==4 * g[i][j]*g[j][k]*g[k][l]*g[l][i]*~g[i][k]*~g[j][l]
print(c//8)