N,M=map(int,input().split())

E=[tuple(map(int,input().split())) for i in range(M)]
S=set(E)

ANS=0
for i in range(N):
    for j in range(i+1,N):
        for k in range(j+1,N):
            for l in range(k+1,N):
                if (i,j) in S and (j,k) in S and (k,l) in S and (i,l) in S and not ((i,k) in S) and not ((j,l) in S):
                    ANS+=1

                if (i,j) in S and (j,l) in S and (k,l) in S and (i,k) in S and not ((i,l) in S) and not ((j,k) in S):
                    ANS+=1

                if (i,k) in S and (j,k) in S and (j,l) in S and (i,l) in S and not ((i,j) in S) and not ((k,l) in S):
                    ANS+=1

print(ANS)