text: SELECT 
  ROUND(
  SQRT(
  POW(MIN(LAT_N)-MAX(LAT_N), 2) 
  + 
  POW(MIN(LONG_W)-MAX(LONG_W), 2)), 4) 
  FROM STATION;
  
  
  
  
  # Simple Array Sum
  
  Given an array of integers, find the sum of its elements.
  
  For example, if the array ar = [1,2,3], 1+2+3 = 6, so return 6.
  
  Function Description
  Complete the simpleArraySum function in the editor below. It must return the sum of the array elements as an integer.
  simpleArraySum has the following parameter(s):
  ar: an array of integers
  
  Input Format
  The first line contains an integer, n, denoting the size of the array. 
  The second line contains n space-separated integers representing the array's elements.
  
  Constraints
  0 < n, ar[i] =< 1000
  
  Output Format
  Print the sum of the array's elements as a single integer.
  
  Sample Input
  6
  1 2 3 4 10 11
  
  Sample Output
  31
  
  Explanation
  
  We print the sum of the array's elements: 1+2+3+4+10+11 = 31.
  