{-
Problem 6
Sum square difference
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.
Answer:
25164150
-}
module E6 where
--m = 10
m = 100
a = [1..m]
a1 = sum $ map (^2) a
a2 = (sum a) ^2
main = do
print $ a2-a1