#include<stdio.h>
int n,m,i,j,k,nr;
char a[4050][4096];
int main()
{freopen("triplete.in","r",stdin);
 freopen("triplete.out","w",stdout);
 scanf("%d %d",&n,&m);
 for(;m;m--)
 {scanf("%d %d",&i,&j);i--;j--;
  if(i<j) a[i][j]=1;
  else a[j][i]=1;}
 for(i=0;i<n-2;i++)
  for(j=i+1;j<n-1;j++)
   if(a[i][j])
   for(k=j+1;k<n;k++)
	if(a[j][k]&&a[i][k]) nr++;
 printf("%d",nr);
 fclose(stdout);
 return 0;}