HW4.35

 public class Solution
 {
     public static void main(String[] args)
     {
         double sum = 0;

         for(int i = 1; i <= 624; i++)
         {
             sum += 1.0 / (Math.sqrt(i) + Math.sqrt(i + 1));
         }

         System.out.println(sum);
     }
 }