"Today is another day! I'm five." With the fail of unit tests, XiaoYang tiredly lies on the sofa. As we all know, XiaoYang is not good at implementing algorithms. The unit test is for a subset searching algorithm. Here is the task.
 
 You are given a set A with n **distinct** integers . You should find a "five" subset S, so that the sum of numbers in S is maximized and the sum is divisible by 5. A set 
 of size m is called the subset of set 
 when 
 holds for 
 and all integers in B are distinct. 
The first line contains integer
, the size of set A.
The second line contains n integers.
Output the maximal sum of S.