Given two integers a and b, compute the sum a+b.
The first line of the input contains an integer T (1 ≤ T ≤ 10000), the number of test cases. There is only
one line of input per test case containing two integers a and b (0 ≤ a,b < 10000).
For each test case, output an integer, which denotes the sum of a+b as described above, in a line.