You've got a rectangular parallelepiped with integer edge lengths. You know the areas of its three faces that have a common vertex. Your task is to find the sum of lengths of all 12 edges of this parallelepiped.
The first and the single line contains three space-separated integers — the areas of the parallelepiped's faces. The area's values are positive ( &gt; 0) and do not exceed 10<sup class="upper-index">4</sup>. It is guaranteed that there exists at least one parallelepiped that satisfies the problem statement.
# http://codeforces.com/problemset/problem/224/A

from math import sqrt


s1, s2, s3 = map(int, input().split())

a = sqrt((s1 * s3) / s2)
b = sqrt((s1 * s2) / s3)
c = sqrt((s2 * s3) / s1)

result = 4 * (a + b + c)
print(result)
