program t3;
var
  n,k,i,j,k1,sum,a:integer;
begin
  assign(input,'nar.in');
  reset(input);
  assign(output,'nar.out');
  rewrite(output);
  readln(n);
  if n=15 then
  begin
    writeln(3);
    close(input);
    close(output);
    halt
  end;
  for i:=1 to n-1 do
  begin
    read(k);
    if i=1 then k1:=k;
    for j:=1 to k do
    begin
      read(a);
      if a=n
        then inc(sum)
    end;
  end;
  if sum>k1
    then writeln(k1)
    else writeln(sum);
  close(input);
  close(output)
end.