# The sum of the squares of the first ten natural numbers is,

# 1^2 + 2^2 + ... + 10^2 = 385
# The square of the sum of the first ten natural numbers is,

# (1 + 2 + ... + 10)^2 = 55^2 = 3025
# Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025  385 = 2640.

# Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.

sum_of_squares = 0
sum = 0
for num in range(1,101):
	sum = sum + num
	sum_of_squares = sum_of_squares + num**2

print sum**2 - sum_of_squares