请按以下要求编程实现：

①　　从键盘输入两个升序排列的整数序列linka和linkb， 每个序列以输入0为结束标记。

②　　将链表linka和linkb归并为linkc，linkc仍然为升序排列。归并完成后，linka和linkb为空表。输出linkc。

③　　对linkc进行处理，保持升序不变，删除其中重复的整数，对重复的整数只保留一个，输出删除重复整数后的链表。

-Please click the following requirements programming: ① ascending order from the keyboard input of two integer sequences linka and linkb, input 0 for each sequence to the closing tag. ② the list linka and linkb combined into linkc, linkc still ascending order. Merger is completed, linka and linkb empty table. Output linkc. ③ The linkc processing, maintaining the same ascending order, delete the duplicate integer, integer only keep on repeating one, delete the duplicate integer output after the list.