#include<stdio.h>
#include<iostream>
#include<fstream>
#define MMAX 128
#define NMAX 4097
FILE *fin,*fout;
using namespace std;

long  A[NMAX][MMAX];
int n,m,nr;
void read()
{   fin=fopen("triplete.in","r");
   fscanf(fin,"%d%d",&n,&m);
   nr=n/32;
   int x,y;
   while(m--)
   {
       fscanf(fin,"%d%d",&x,&y);
       A[x][y/32]=A[x][y/32]|(1<<y);
       A[y][x/32]=A[y][x/32]|(1<<x);
//       cout<<x<<" "<<A[x][0]<<'\n';
   }
   fclose(fin);
}
int numar(int c)
{
    int x=0;

    while(c)
    {  c=c&(c-1);

        x++;}

    return x;



}
void solve()
{  int x,y,c,sol=0;
   fin=fopen("triplete.in","r");
   fscanf(fin,"%d%d",&n,&m);
   while(m--)

       {fscanf(fin,"%d%d",&x,&y);
      for(int i=0;i<=nr;i++)
      {
             c=A[x][i]&A[y][i];
             sol+=numar(c);
             A[x][i]=A[x][i]&(255-(1<<y));
             A[y][i]=A[y][i]&(255-(1<<x));
      }
      }
  fclose(fin);
  fout=fopen("triplete.out","w");
  fprintf(fout,"%d",sol);
  fclose(fout);
}

int main()
{
    read();
    solve();

    return 0;
}