##A borough has made the following prognosis for the changes
##in population over the next few years:
##At the start of 2004 there were 26 000 inhabitants
##The rates of births and deaths are estimated at 0.7% and 0.6%
##of the population respectively,The number of people moving in and out
#of the borough annually is estimated at 300 and 325 respectively.
##Write a program to calculate the borough’s estimated population
##at the beginning of a particular year.

year=input("enter year:") 

Birthrate = 0.007
Deathrate = 0.006
Movein = 300
Moveout = 325
Baseyear = 2004
Basepop=26000


result=(Basepop + (Movein - Moveout) * year) * year^(Birthrate - Deathrate)

print "estimated population", (result)
    

#result = baseyear- moveout + movein * birthrate - (year * deathrate)