3.扩展欧几里德线性同余方程
http://hi.baidu.com/ve_bird/blog/item/cf585e3f04c82dcb9f3d6203.html
http://www.cppblog.com/RyanWang/archive/2009/07/19/90525.html
4.中国剩余定理
http://baike.baidu.com/view/157384.htm?fromenter=%D6%D0%B9%FA%CA%A3%D3%E0%B6%A8%C0%ED&fr=ala0_1_1
3和4. — http://hi.baidu.com/%B1%BF%D0%A1%BAA2_shw/blog/item/5305e12c7289973e359bf768.html