# include <fstream>
# include <bitset>
# define DIM 4010
# define DIM1 65546
using namespace std;
ifstream fin("triplete.in");
ofstream fout("triplete.out");
bitset<DIM> b[DIM],a;
int st[DIM1],dr[DIM1],n,m,x,y,i,sol;
int main () {
    fin>>n>>m;
    for(i=1;i<=m;i++){
        fin>>x>>y;
        b[x][y]=b[y][x]=1;
        st[i]=x;
        dr[i]=y;
    }
    for(i=1;i<=m;i++){
        a=(b[st[i]]&b[dr[i]]);
        sol+=a.count();
    }
    fout<<sol/3<<"\n";
    return 0;
}