with Ada.Text_IO, Ada.Integer_Text_IO, Ada.Float_Text_IO;
 use Ada.Text_IO, Ada.Integer_Text_IO, Ada.Float_Text_IO;

procedure main is
   A: Integer;
   B: Integer;
   C: Integer;
begin
   get(A);
   get(B);
   get(C);
   if (A + B + C >= 22) then put_line("bust");
   else put_line("win");
   end if;
end main;