欧拉计划(python) problem 6

Sum square difference

Problem 6

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

12 + 22 + ... + 102 = 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.

Python code :

n=100

sum=0

for i in range(1,n):

for j in range(i+1,n+1):

sum+=2*i*j

print(sum)

result :25164150

time :<1s

时间： 2024-10-05 23:49:32

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