Deskripsi untuk soal nomor 48 - 50

Perhatikan fungsi berikut

function wah(x, y: integer) : integer;
begin
 if ((x = 0) and (y = 0)) then wah := 0;
 else if (x > y) then
 begin
 if (x > -y) then wah := wah(x – 1, y) + 1;
 else wah := wah(x, y + 1) + 1;
 end
 else
 begin
 if (x > -y) then wah := wah(x, y - 1) + 1;
 else wah := wah(x + 1, y) + 1;
 end;
end;