+ import std.math;
  import std.typecons;
- import std.math;
  /*
  "
-     This function will take an array of integers. For all entries in the array, the function shall square the integer entry if its index is a 
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+ This function will take an array of integers. For all entries in the array, the function shall square the integer entry if its index is a 
-     multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3. The function will not 
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+ multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3. The function will not 
-     change the entries in the array whose indexes are not a multiple of 3 or 4. The function shall then return the sum of all entries. 
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+ change the entries in the array whose indexes are not a multiple of 3 or 4. The function shall then return the sum of all entries. 
-     
-     Examples:
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+ Examples:
-     >>> lst
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+ >>> lst
-     [1L, 2L, 3L]
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+ [1L, 2L, 3L]
-     >>> lst
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+ >>> lst
-     []
+ []
-     >>> lst
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+ >>> lst
-     [-1L, -5L, 2L, -1L, -5L]
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+ [-1L, -5L, 2L, -1L, -5L]
-     
  */
  long sum_squares(long[] lst)