begin
var (x, y) := ReadReal2('Введи координаты');
if (x * x + y * y <= 9) and (x * x + y * y >= 4)
and (x <= 0) and (y >= 0) or
(x * x + y * y <= 4) and (x >= 9) and (y <= 0)
then
Println('Да')
else
Println('Нет');
end.
begin
var (x, y) := ReadReal2('Введи координаты');
if (x * x + y * y <= 9) and (x * x + y * y >= 4)
and (x <= 0) and (y >= 0) or
(x * x + y * y <= 4) and (x >= 9) and (y <= 0)
then
Println('Да')
else
Println('Нет');
end.