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#include <fstream>
#include <vector>
using namespace std;
ifstream fin("triplete.in");
ofstream fout("triplete.out");
int n,m,i,j,k,x,y,nr;
bool a[4097][4097];
vector<int> L[4097];
int main()
{
fin >> n >> m;
for (i=1; i<=m; i++)
{
fin >> x >> y;
if (x > y)
swap(x, y);
L[x].push_back(y);
a[x][y] = 1;
}
for (i=1; i<=n; i++)
for (j=0; j<L[i].size(); j++)
for (k=0; k<L[i].size(); k++)
{
x = L[i][j];
y = L[i][k];
if (x > y)
swap(x, y);
if (a[x][y] == 1)
nr++;
}
fout << nr/2;
return 0;
}