#!/bin/env Python
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#		Pyderiv-0.1.py (Version 0.1)			#
#												#
#												#
#			   by Gabe Fierro					#
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#												#
#################################################




from string import *
import re
def doubNegtoPos(derivedTerm):
	if '--' in derivedTerm:
		derivedTerm=derivedTerm.replace('--','')
		#print 'doubneg derivedTerm',derivedTerm
		return derivedTerm
	else:
		return derivedTerm
def checkNeg(term):
	if term[0]=='-':
		global negTerm
		negTerm=True
		term=term[1:]
		return term
	else:
		negTerm=False
		return term
def makeNeg(term):
	if negTerm==True:
		term='-'+term
		return term
	else:
		return term
def expTerm(term): #x^2,-3x^4
	term=checkNeg(term)
	#print 'checkneg',term
	const=''
	for char in term:
		if char.isdigit() == True:
			const=const+char 					#const=1, or 3
			eterm=term[(term.index(char)+1):]	#eterm=x^2 or x^4
		if char.isdigit()==False:
			break
	if const=='':
		const='1'
	for char in term:
		if char=='^':
			exponent=term[(term.index(char)+1):]
			#print 'exponent',exponent
	coefficient=int(const)*int(exponent)
	#print 'coefficient',coefficient
	derivedTerm= makeNeg(str(coefficient)+'x^'+str(int(exponent)-1))
	#print 'derivedTerm',derivedTerm
	return doubNegtoPos(derivedTerm)
def EulerExpTerm(term): #for e^2x, -4e^-6x
	term=checkNeg(term)
	#print 'checkneg',term
	const=''
	#print 'term',term
	if term[0] =='e':
		term=term.replace('e','1e')
	for char in term:
		#print 'char',char
		if char.isdigit()==False:
			break		
		if char.isdigit() == True:
			const=const+char 					#const=1, or 4
			eterm=term[(term.index(char)+1):]	#eterm=e^x,e^-6x
		#print 'eterm',eterm
	#print 'next eterm',eterm
	if const=='':
		const='1'
	
	if eterm[2:-1]=='':
		eterm=eterm.replace('x','1x')
	if eterm[2:-1]=='-':
		eterm=eterm.replace('-','-1')

	return doubNegtoPos(makeNeg(str(int(eterm[2:-1])*int(const))+eterm))
def rules(term):
	#regular expressions to detect something like "x^2"
	#check for ax^b
	if 'x' not in term:
		return '0'
	if 'x^' in term:
		#print 'x^term',term
		numOfX=0
		for char in term:
			if char=='x':
				numOfX+=1
		if numOfX==1:
			return expTerm(term)
	#check for ax
	ax=re.compile('[1-9]+x(?![^-])')
	matchx=ax.match(checkNeg(term))
	if matchx:
			return term[:-1]
	#check for ae^bx
	if 'e^' in term:
		numOfX=0
		for char in term:
			if char=='x':
				numOfX+=1
		if numOfX==1:
			return EulerExpTerm(term)
userequation=raw_input(":") #Get in the form of "x^2" or "e^2x" Not sure how to 
EquList=split(userequation,"+")
derivList=[]
derivative=''
for term in EquList:
	#print 'term',term
	derivList.append(rules(term))
#print derivList
for term in derivList:
	derivative=derivative+'+'+term
print derivative[1:]