SP19291 WPC5A - Structures

Description

In the Galactical Wars happens the great event of designing a structure to honour the current generation of participants. (It is another matter that inevitably the monument is destroyed at the end of the Galactical Wars). The organizers this year do not believe that this is a good event, and have reduced the event to building a right structure : a **right-angled** triangle that represents the geometry of the universe. Further they have given a specific **Odd Integer** n, which they want one of the **Shorter** sides of the triangle to be. The organizers in the galaxy H2 are infuriated with this high-handedness. To demonstrate their prowess in this event, they have decided to build all possible right structures. Calculate how many different right structures they can possibly build. Input:

Input Format

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Output Format

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