text: #defining the main function of the program
  def main():
  
  	i = 0               #setting integer to 0
  	x = 119.0           #declaring the x float
  
  	for i in range(120):    #loop i from 0 to 119, inclusive
  		if((i%2)==0):       #if i is even
  			x += 3.         # add 3 to x
  		else:               #if i is odd
  			x -=5.          #subtract 5 from x
  
  	s = "%3.2e" % x         #make a string containing x with
  							#sci. notation w/ 2 decimal places
  
  	print(s)				#prints s to the screen
  
  #rest of program continues
  if __name__== "__main__": #if the main() function exists, run it
  	main()
  