[SARA]

To me clearly it seems that the number of points should be odd ,so either 11 or 13 .It is indeed 11 ,if the  point (pi/2,6) is not counted.But i am confused as to why it isn't counted    ? If we do count it then we will have two more floors at 5 ,and so the answer will be 13 ,which is wrong .I have referred to the desmos graph .

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