【问题描述】
　　　　　设计一个实现一元稀疏多项式相加运算的演示程序。
【基本要求】
　　　　（1）输入并建立两个多项式；
　　　　（2）多项式a与b相加，建立和多项式c；
　　　　（3）输出多项式a,b,c。输出格式：比如多项式a为：A(x)=c1xe1+c2xe2+…+ cmxem，其中，ci和ei分别为第i项的系数和指数，且各项按指数的升幂排列，即0≤e1＜e2＜…＜em。多项式b,c类似输出。([descr iption of the problem]
Design a demonstration program to realize the addition operation of unary sparse polynomials.
[basic requirements]
(1) the input and establishment of two polynomials;
(2) polynomial A is added to B, and polynomial C is established.
(3) output polynomials a, B, C. Output format: for example, polynomial A is A (x) =c1xe1+c2xe2+... + cmxem, where Ci and EI are the coefficients and exponents of item I respectively, and each is arranged according to the exponent ascending power, that is, 0 or less E1 < E2 <... Em. Polynomial B, C is similar to output.)