from sys import stdout
import io
import os
from math import sqrt
input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
s1, s3 = [int(i) for i in input().split()]
s2 = (s3 ** 2) / s1
p = (sqrt(s1) + sqrt(s2)) ** 2
stdout.write(f"{p:.2f}")
ZnJvbSBzeXMgaW1wb3J0IHN0ZG91dAppbXBvcnQgaW8KaW1wb3J0IG9zCmZyb20gbWF0aCBpbXBvcnQgc3FydAoKaW5wdXQgPSBpby5CeXRlc0lPKG9zLnJlYWQoMCwgb3MuZnN0YXQoMCkuc3Rfc2l6ZSkpLnJlYWRsaW5lCgpzMSwgczMgPSBbaW50KGkpIGZvciBpIGluIGlucHV0KCkuc3BsaXQoKV0KczIgPSAoczMgKiogMikgLyBzMQpwID0gKHNxcnQoczEpICsgc3FydChzMikpICoqIDIKCnN0ZG91dC53cml0ZShmIntwOi4yZn0iKQo=