Given a string, return how many Wi-Fi hotspots I'm able to connect to. The phone is represented as a P. hotspot is represented as an *. An obstruction is represented as a #. You cannot access a hotspot if they are behind one of these obstructions. Examples nonstopHotspot ("* nonstopHotspot ("* # * nonstopHotspot ("***#P#***" P * * *") 3 P # * #") 0 1

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