

print 0

#if 0
 print 1
#else
 print 2
#endif

#if 1
 print 1
#else
 print 2
#endif

#if 1
 #if 1
  print 1
 #else
  print 2
 #endif
#endif

#if 0
 #if 1
  print 1
 #else
  print 2
 #endif
#endif


# else	;error

#endif	;error

#if 0 t
	print 00
#endif	;comment

#if 1 ;;comment
	print 11
#endif	;comment


#if t
	print 00
#endif	

