Description:
A regular $$$n$$$-gon is given in the plane. The length of its side is $$$\sqrt{2 - \sqrt{2}}$$$ and the length of its largest diagonal is $$$2$$$. Find all possible values of $$$n$$$. (Give the answer in the form $$$a,b,c,\dots$$$ without spaces.)
Input Format:
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Output Format:
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Note:
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