program hoop;

var
  a: integer;

function plus(a, b: integer): integer;

begin
  plus := a + b
end;

function fac(i: integer): integer;

var
  hlp: integer;

begin
  if (i = 0) then
    fac := 1
  else 
  begin
    hlp := fac(i-1);
    writeinteger(i);
    writeinteger(hlp);
    fac := i * hlp
  end
end;

begin
  a := fac(plus(3,2));
  writeinteger(a)
end.