Time

18:26:17
22 May 2012
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Pieces - 2

   The segment length L is cut into the largest number of units of length - the natural numbers, of which it is impossible to lay down a single triangle. Find the number of possible options for cutting. (Two cutting are different, if ordered arrays of lengths of their parts differ by at least one element).


Specifications

   Input

   The value of L (4 <= L <= 200).

   Output

   The only number - the number of options for cutting.


Problem information

Time Limit: 1 seconds
Memory Limit: 64 MB
Balls for the passed test: 1
Complexity: 70% 12/40

Example

Example input

11

Example output

4


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