Add two number

Calculate the sum a+b for given integers a and b.

Input

There will be provided certain number of data sets for the problem. Each data set consist of two integer numbers ai and bi separated with a space, where i is the number of the data set. Data sets are separated with a new line.

Output

For ith data set print the value of ai + bi. Answers should be separated with a new line.

Example

Input:
2 3
10 -2
-1 5
-3 -3
0 1

Output:
5
8
4
-6
1

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