title: Pizza Cut Problem Circle Division Lines
signature: function pizza_cut_problem_circle_division_lines(n)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(n, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(n), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(46, 1082);
      @printf("TEST-0...%s\n",result);
      
      result = driver(68, 2347);
      @printf("TEST-1...%s\n",result);
      
      result = driver(4, 11);
      @printf("TEST-2...%s\n",result);
      
      result = driver(12, 79);
      @printf("TEST-3...%s\n",result);
      
      result = driver(56, 1597);
      @printf("TEST-4...%s\n",result);
      
      result = driver(14, 106);
      @printf("TEST-5...%s\n",result);
      
      result = driver(81, 3322);
      @printf("TEST-6...%s\n",result);
      
      result = driver(29, 436);
      @printf("TEST-7...%s\n",result);
      
      result = driver(26, 352);
      @printf("TEST-8...%s\n",result);
      
      result = driver(40, 821);
      @printf("TEST-9...%s\n",result);
      
  end
  
  main()
source_py: def pizza_cut_problem_circle_division_lines(n):
      return int((1 + ((n * (n + 1)) / 2)))
source_cpp: int pizza_cut_problem_circle_division_lines(int n) {
    return 1 + n * ( n + 1 ) / 2;
  }