#include <cstdio>
#include <vector>
#include <bitset>
#include <algorithm>

#define F first
#define S second

using namespace std;

const int Nmax = (1 << 12);

int n , m , ans;
vector < pair < int , int > > q;
bitset < Nmax > aux , g[Nmax];

int main()
{
    freopen("triplete.in","r",stdin);
    freopen("triplete.out","w",stdout);

    scanf("%d %d", &n, &m);

    q = vector < pair < int , int > > (m);
    for (auto &it : q)
    {
        scanf("%d %d", &it.F, &it.S);
        it.F--; it.S--;
        g[it.F][it.S] = 1;
        g[it.S][it.F] = 1;
    }

    for (auto &it : q)
    {
        aux = g[it.F] & g[it.S];
        ans += aux.count();
        //printf("%d %d %d ", g[it.F].count() , g[it.S].count() , aux.count());
        //g[it.F] &= (~aux);
        g[it.F][it.S] = 0;
        //g[it.S] &= (~aux);
        g[it.S][it.F] = 0;
        //printf("%d %d\n", g[it.F].count() , g[it.S].count());
    }

    printf("%d\n", ans);

    return 0;
}