title: Sum Matrix Element Absolute Difference Row Column Numbers 2
signature: function sum_matrix_element_absolute_difference_row_column_numbers_2(n)
source_py: def sum_matrix_element_absolute_difference_row_column_numbers_2(n):
      n -= 1
      sum = 0
      sum += ((n * (n + 1)) / 2)
      sum += (((n * (n + 1)) * ((2 * n) + 1)) / 6)
      return int(sum)
source_cpp: int sum_matrix_element_absolute_difference_row_column_numbers_2(int n) {
    n --;
    int sum = 0;
    sum += ( n * ( n + 1 ) ) / 2;
    sum += ( n * ( n + 1 ) * ( 2 * n + 1 ) ) / 6;
    return sum;
  }
question_info.entry_fn_name: sum_matrix_element_absolute_difference_row_column_numbers_2
question_info.entry_cls_name: Solution
question_info.test_case_ids: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
question_info.test_code: 
  
  -- SOLUTION CODE
  -- ============================================
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  function isCorrect(actual, expected)
      if type(expected) ~= type(actual) then
          return false
      end
      
      if type(expected) == 'table' then
          for k,v_expected in pairs(expected) do
              
              if actual[k] == nil then
                  return false
              end
              local v_actual = actual[k]
              if not isCorrect(v_actual, v_expected) then
                  return false
              end
              actual[k]=nil
          end
      
          if next(actual) then 
              return false
          end
          return true
      else
          return actual == expected
      end
  end
  
  function validateSolution(actual, expected)
      return isCorrect(actual,expected)
  end
  
  function driver(n, expected)
      local exec_result;
      local status, error_msg = pcall(function () 
          exec_result=PLACEHOLDER_FN_NAME(n) 
      end)
      if status then
          if validateSolution(exec_result,expected) then
              return "PASSED"
          end
          return "FAILED"
      else
          return string.format("ERROR=%s",string.gsub(error_msg,".*:[%d]+: ",""))
      end
  end
      
  function main()
      result = driver(12, 572)
      print(string.format("TEST-0...%s",result))
  
      result = driver(89, 234960)
      print(string.format("TEST-1...%s",result))
  
      result = driver(76, 146300)
      print(string.format("TEST-2...%s",result))
  
      result = driver(2, 2)
      print(string.format("TEST-3...%s",result))
  
      result = driver(81, 177120)
      print(string.format("TEST-4...%s",result))
  
      result = driver(11, 440)
      print(string.format("TEST-5...%s",result))
  
      result = driver(26, 5850)
      print(string.format("TEST-6...%s",result))
  
      result = driver(35, 14280)
      print(string.format("TEST-7...%s",result))
  
      result = driver(16, 1360)
      print(string.format("TEST-8...%s",result))
  
      result = driver(66, 95810)
      print(string.format("TEST-9...%s",result))
  
  end
  
  main()
question_info.test_list: [{"idx": 0, "outputs": 572, "inputs": {"n": 12}}, {"idx": 1, "outputs": 234960, "inputs": {"n": 89}}, {"idx": 2, "outputs": 146300, "inputs": {"n": 76}}, {"idx": 3, "outputs": 2, "inputs": {"n": 2}}, {"idx": 4, "outputs": 177120, "inputs": {"n": 81}}, {"idx": 5, "outputs": 440, "inputs": {"n": 11}}, {"idx": 6, "outputs": 5850, "inputs": {"n": 26}}, {"idx": 7, "outputs": 14280, "inputs": {"n": 35}}, {"idx": 8, "outputs": 1360, "inputs": {"n": 16}}, {"idx": 9, "outputs": 95810, "inputs": {"n": 66}}]