Problem 23      Controlling Companies   Submit 4    AC  2005/6/20   2005/6/30Problem 41      Packing Rectangles         Submit 8    AC 2005/6/20   2005/6/30Problem 37      Camelot                          Submit 7    AC 2005/6/20   2005/7/3Problem         Closed Fences 2005/7/3Problem      Cow Tours 2005/7/3Problem       American Heritage 2005/7/3Problem       Transformations 2005/7/3   Old Blog Link: http://computer.mblogger.cn/henryhu/posts/40444.aspx