Fixed indentation error and removed duplicate 'import sys'
Fixed indentation error and removed duplicate 'import sys'

NickVolynkin/SmokeDetector,ArtOfCode-/SmokeDetector,Charcoal-SE/SmokeDetector,ArtOfCode-/SmokeDetector,NickVolynkin/SmokeDetector,Charcoal-SE/SmokeDetector