Problem9243--ABC292 —— F - Regular Triangle Inside a Rectangle

9243: ABC292 —— F - Regular Triangle Inside a Rectangle

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Time Limit : 1.000 sec  Memory Limit : 512 MiB  Special Judge

Description

### Problem Statement

Find the maximum side length of a regular triangle that can be drawn within a rectangle whose side lengths are $A$ and $B$.

Input

### Input

The input is given from Standard Input in the following format:

```
$A$ $B$
```

Output

### Output

Print the answer.  
Your output is considered correct if the absolute or relative error from the true answer is at most $10^{-9}$.

Constraints

### Constraints

-   $1 \leq A,B \leq 1000$
-   $A$ and $B$ are integers.

Sample 1 Input

1 1

Sample 1 Output

1.03527618041008295791
The following figure shows an optimal drawing, with the side length of $\sqrt{6}−\sqrt{2}$.



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