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SICT1005 - Талбай

Гурвалжны 3 тал өгөгдсөн бол талбайг ол.

Input

Талууд хоосон зайгаар тусгаарлагдан нэг мөрөнд өгөгдөнө. 

Output

Талбайг таслалаас хойш 2 орны нарийвчлалтай гаргана уу.

Example

Input:
3.0 4.0 5.0 

Output:
6.00

Added by:B@TJ@RG@L
Date:2014-02-18
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:C C++ 4.3.2 PYTHON

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