湖南大学2018年第十四届程序设计竞赛重现赛.Hello I am HERE!（高精度计算）

链接：https://www.nowcoder.com/acm/contest/125/C
来源：牛客网

时间限制：C/C++ 1秒，其他语言2秒
空间限制：C/C++ 32768K，其他语言65536K
64bit IO Format: %lld

题目描述

There are many difficulties in today's contest, but this is definitely not one of them.

Because I want you to do it, the classic A+B.

输入描述:

First line an Integer N means n test cases.
Next 2N lines representing 2N groups of different Integers.
N<50.
THE LENGTH of every Integer will less than 5000.