Given two non-negative integers \(a\) and \(b\), compute \(a+b\).

Input

The first line contains \(a\). The second line contains \(b\).

The input satisfies:

• \(0 \le a, b\)
• a and b contain at most 100,000 decimal digits.

Output

Print \(a+b\).

Example

Input

123
4567

Output

4690