#include <fstream>
using namespace std;
ifstream f ( "triplete.in" );
ofstream g ( "triplete.out" );
bool a[4100][4100];
int main()
{
    int x1, y1, N, M, nrt = 0;
    f >> N >> M;

    for ( int i = 1; i <= M; i++ )
    {
        f >> x1 >> y1;
        a[x1][y1] = a[y1][x1] = 1;

        for ( int j = 1; j <= N; j++ )
            if ( a[j][x1] == 1 && a[j][y1] == 1 )
                nrt++;
    }

    g << nrt;
    return 0;
}