PROGRAMMING:A + B (multi group data 2)
###Problem description
There are several groups of integer pairs, and the sum of each logarithm is obtained.
###Input format:
Several rows, each with two integers (absolute value not more than 10000). The last group of data is "0 0", which means the end of the data and does not participate in the operation.
###Output format:
The calculation results of each group of data are displayed on a separate line.
###Input example:
```in
18 -299
1 1
-5 8
0 0
```
###Output example:
```out
-281
two
three
```
answer：If there is no answer, please comment
There are several groups of integer pairs, and the sum of each logarithm is obtained.
###Input format:
Several rows, each with two integers (absolute value not more than 10000). The last group of data is "0 0", which means the end of the data and does not participate in the operation.
###Output format:
The calculation results of each group of data are displayed on a separate line.
###Input example:
```in
18 -299
1 1
-5 8
0 0
```
###Output example:
```out
-281
two
three
```
answer：If there is no answer, please comment