const b=32;
var x:array[1..4096,1..(4096 div b) +1]of longword;
    f,g:text;
    k,m,a1,a2,tri,l,n,c,t:word;
begin
assign(f,'triplete.in');
reset(f);
read(f,n,m);
if (n mod b <>0)then
n:=(n div b)+1
else
n:=n div b;
tri:=0;
for k:=1 to m do
begin
     read(f,a1,a2);
     for t:=1 to n do
     begin
          l:=x[a1,t] and x[a2,t];
          while(l>0)do
          begin
                l:=l and(l-1);
                tri:=tri+1;
          end;
     end;
     c:=(a2 div b)+1;
     x[a1,c]:=x[a1,c] or (1 shl (a2 mod b));
     c:=(a1 div b)+1;
     x[a2,c]:=x[a2,c] or (1 shl(a1 mod b));
end;
close(f);
assign(g,'triplete.out');
rewrite(g);
writeln(g,tri);
close(g);
end.