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Sehrli maydondan chiqish. | HackNow
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Sehrli maydondan chiqish.
lock
UZ only
O'rta
500 points
1 s
256 MB
Input format
Output format
Constraints
Examples
1
1
Example #1
Input
3 3 ... .O. ...
Output
2
Solution editor
Python 3
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PYTHON
UTF-8
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4 spaces
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