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$N$-tub son | HackNow
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$N$-tub son
lock
UZ only
Oson
100 points
3 s
256 MB
Input format
Output format
Constraints
Examples
1
1
Example #1
Input
5
Output
11
Solution editor
Python 3
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Language
PYTHON
UTF-8
Tab
4 spaces
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+
Enter
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