这是本人在北京大学网站上做过的一道题希望对大家有所帮助-this is my web site at Beijing University has done a hope that you all have a right to help

北京大学pku_oj上的1043题的解题报告，很经典-Peking University pku_oj the 1043 report titled problem-solving, it is a classic

两种解决方案 Richard just finished building his new house. Now the only thing the house misses is a cute little wooden fence. He had no idea how to make a wooden fence, so he decided to order one. Somehow he got his hands on t