1 import java.util.*;

 2

 3 public class A {

 4     public static void main(String[] args) {

 5         Scanner io = new Scanner(System.in);

 6         long a = io.nextLong(), b = io.nextLong(), c = a + b;

 7         long min = 0, max = 0;

 8

 9         for (long i = (long) Math.sqrt(c); i >= 1; i--) {

10             if (c % i == 0) {

11                 min = i;

12                 max = c / i;

13

14                 //当两个因数差距越来越大时，max的长度比min大一倍多，所以max妥妥超时

15                 for (long j = min; j >= 1; j--) {

16                     if (a % j == 0 && a / j <= max || b % j == 0 && b / j <= max) {

17                         System.out.println((min + max) * 2);

18                         return;

19                     }

20                 }

21             }

22         }

23

24     }

25 }