# -*- coding: utf-8 -*-
"""
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 = 552 = 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.
"""
def main():
n = 100
a = sum([i*i for i in range(1,n+1)])
b = sum(range(1,n+1))
b = b*b
print b-a
if __name__ == '__main__':
main()