Easy -- Problem X (1 point)

For this problem, you merely have to add two numbers together (repeatedly).

Input will be from a file PROBLEMX.DAT. Each line of this file will have two integers between 1 and 1,000,000, separated by one or more spaces. The file will be terminated by a line consisting of a two zeroes.

Output, which must be written to standard output (the screen), will be one line for each line of input. Each output line must contain the number which is the sum of the two input numbers, leftjustified.

Example Input

1 1
1000000     1000000
42  56
0 0

Example Output