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.
'''
# Submitted By [email protected]
Don't Copy This Code, Try To Solve It By Yourself
'''
# Problem Name = "Parallelepiped"
# Class: A

def Solve():
    e=list(map(lambda x: 2 + int(x)//2 if int(x)>2 else int(x) + 1, input().split()))
    print(sum(e)*2)


if __name__ == "__main__":
    Solve()