（1）多项式以二元组的方式从文件输入。

如多项式3+4x3+6x8+12x15则输入(3,0)(4,3)(6, 8)(12,15)(0,0)

（2）以链表的形式存放多项式

（3）相加后的多项式以二元组的形式输出到屏幕上

-(1) the polynomial to a tuple from the file input.

　　 Such as polynomial 3 4x3 6x8 12x15 type (3,0) (4,3) (6, 8) (12,15) (0,0)

(2) the form of a linked list to store the polynomial

(3) the sum of the polynomial tuple in the form of output to the screen