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# 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.
#
# Answer: 25164150

println(sum(1:100)^2 - sum(map(n->n^2, 1:100)))