409_H. A + B Strikes Back
A + B is often used as an example of the easiest problem possible to show some contest platform. However, some scientists have observed that sometimes this problem is not so easy to get accepted. Want to try?

Input

The input contains two integers a and b (0 ≤ a, b ≤ 103), separated by a single space.

Output

Output the sum of the given integers.

Examples

Input

5 14


Output

19


Input

381 492


Output

873
```python
import sys
import os
a,b=input().split()
a=int(a)
b=int(b)
print(a+b)

```