pi = 3.14159265359
r = float(input())
a, d = r * r * pi, 2 * r * pi
print(a, d, sep=' ')

27a94a4a8b98478fc077290f36451b9f230787d0
<mask token>

<mask token>
print(a, d, sep=' ')

pi = 3.14159265359
r = float(input())
a, d = r * r * pi, 2 * r * pi
print(a, d, sep=' ')
