# coding: utf-8
# Your code here!

def saiki(num,origin):
    group[num]=origin
    for i in range(len(friends[num])):
        if friends[num][i]==1 and group[i]==i:
            saiki(i,origin)
    return

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

friends=[[0 for i in range(N)] for j in range(N)]
group=[i for i in range(N)]

for _ in range(M):
    a,b=map(int,input().split())
    a-=1
    b-=1
    friends[a][b]=1
    friends[b][a]=1

for i in range(N):
    if group[i]==i:
        saiki(i,i)

ans=0
for i in range(N-2):
    for j in range(i+1,N-1):
        for k in range(j+1,N):
            if (friends[i][j]==1 or group[i]!=group[j]) and (friends[j][k]==1 or group[j]!=group[k]) and (friends[k][i]==1 or group[k]!=group[i]):
                ans+=1

print(ans)