# include the Numpy as library
import numpy as np

#define the main() function
def main():

	i = 0		# declare an integer i
	x = 119.0	# declare a float x
	
	for i in range(120):	# loop i from 0 to 119, inclusive
		if((i%2)==0):		# 3if 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)				# print s to the screen 

if __name__ == "__main__": 
	main()
							