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#include <bits/stdc++.h>
using namespace std;
ifstream fin("triplete.in");
ofstream fout("triplete.out");
bitset<4100>a[4100];
bitset<4100>b;
int n,m;
void Citire()
{
int i,x,y;
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>x>>y;
a[x][y]=1;
a[y][x]=1;
}
}
void Rezolvare()
{
int i,j,x,sol=0;
for(i=1;i<=n-2;i++)
for(j=i+1;j<=n-1;j++)
{
b=(a[i]&a[j]);
b=(b>>(j+1))<<(j+1);
sol+=b.count();
}
fout<<sol<<"\n";
}
int main()
{
Citire();
Rezolvare();
return 0;
}