3372: A+B problem II

Everyone knows how to calculate the answer of A+B.But for the computers,there is still some problem you need to think about.

Multiple input case.
Every time input a A(0=<A=<10^1000) and a B(0=<B=<10^1000).

原题范围有误,正确数据范围应为 A(0=<A=<10^10000) and a B(0=<B=<10^10000).

Just output the answer of A+B.

1 1
473653756734567354673 47634865847657346538475638

2
47635339501414081105830311