# Here are a number of towns with their current populations.
# Each year, a further 6000 people move into the area and they
# choose where to live based on the cost of housing, the quality
# of railway connection, and the development plans for the area

# Chippenham Trains Per hour increased by 1 due to excellent
# quality / speed / destinations of services for local residents
Chippenham 34000 growth 5.2 150000
Melksham 22000 growth 0.2 120000
Trowbridge 28000 growth 4.2 120000
Westbury 11000 growth 6 130000
# Dilton Marsh has 0.6 trains per hour but figure increased to
# 1.6 due to proximity of Westbury
Dilton Marsh 2000 growth 1.6 140000
Warminster 17000 growth 3 130000
Devizes 11000 stable 0 150000
Calne 12000 stable 0 120000
Corsham 12000 growth 0 130000
Bradford-o-A 9000 stable 4 160000
Malmesbury 4000 stable 0 180000

# Create tables for each town, bearing in mind that the
# desirability algorithm differs for "stable" and "growth"
# towns

# ------------------

# The desirability factor for a growth town is
# current population / house price squared * (6 + trains per hour)
# And for a stable town is
# current population / house price squared * (3 + trains per hour)

# The 6000 newcomers are spread in proportion to the factor
# Each year, 1% of the population of each town leaves the area

# Each year, house prices in growth towns rise by the town's
# growth factor minus 1%.

# In stable towns, prices rise by the growth factor squared
# plus 2%

# -------------------

# Write a program to simulate the rise and fall in populations
# over the next 15 years.