typedef a = ()();typedef b = int();typedef c = int(int x);typedef d = int( int x, int y,);typedef e = (a^)(b^);typedef f = (a^, int r)(int x);typedef g = ( a^, b^, c^,)(a^, b^, c^);typedef h = a^(b^ x);typedef i = ((int r, int s), (int, int))((int x, int));typedef j = (int r)(int y)^ (int x);