We have a task for you that is as old as time, but in a slightly refreshed version. It consists of adding two numbers together, which this time can be quite large. If only there were some tool on Potyczki Algorytmiczne that helps deal with large numbers...

Input

The first line of standard input contains a single positive integer $a$, which consists of no more than $5\,000$ digits.

The second line of standard input contains a single positive integer $b$, which consists of no more than $5\,000$ digits.

The numbers $a$ and $b$ are given without leading zeros.

Output

The only line of output should contain the result of the addition $a + b$.

Examples

Input 1

1997
25

Output 1

2022