mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-27 23:11:09 +00:00
21 lines
651 B
Python
21 lines
651 B
Python
# -*- coding: utf-8 -*-
|
||
'''
|
||
Problem:
|
||
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 N natural numbers and the square of the sum.
|
||
'''
|
||
from __future__ import print_function
|
||
|
||
suma = 0
|
||
sumb = 0
|
||
n = int(input())
|
||
for i in range(1,n+1):
|
||
suma += i**2
|
||
sumb += i
|
||
sum = sumb**2 - suma
|
||
print(sum)
|