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

E=set()
for i in range(M):
    a,b=map(int,input().split())
    E.add((a,b))

def f(a,b):
    return (min(a,b),max(a,b)) in E


S=0
for x in range(N):
    for y in range(N):
        if x!=y:
            for z in range(N):
                if x!=z and y!=z:
                    for w in range(N):
                        if x!=w and y!=w and z!=w:
                            S+=(f(x,y) and f(y,z) and f(z,w) and f(w,x) and (not f(x,z)) and (not f(y,w)))
                                
print(S//8)