POJ 1753

先放着，待会再来
http://blog.chinaunix.net/uid-22609852-id-3506122.html
http://proverbs.diandian.com/post/2012-05-11/19248470
http://www.cppblog.com/Yusi-Xiao/archive/2009/03/21/77383.html
http://www.cnblogs.com/HappyAngel/archive/2010/05/12/1734108.html
http://www.lvzejun.cn/?p=332

//题目
//记得今天写出解体报告