In the most of arithmetic addition case, we can simply use int or long long to store the two integers and compute the answer by the operater '+' in C. If we have two big integers that can not be stored into the varibles mentioned below, we should make use of arrays to complete the addition task.
Given two big number A, B, please compute A + B.
First line contains an integer which denotes the length of A. The following one line contains the big integer A.
Third line contains an integer which denotes the length of B. The following one line contains the big integer B.
(1 ≤ number of digits of A, B ≤ 100, both A and B are intergers ≥ 0)
An integer which denotes the answer of A + B.
Note that you don't need to print '\n' at the end of the output