Submission #14757268

Source Code Expand

END { load __FILE__ unless $stdin.eof? }

n = gets.to_i

s = (1..(n/2)).sum do |k|
  m = n / k
  m * m.succ / 2 * k
end
s += (n/2 + 1 + n) * (n - n/2) / 2

puts s

Submission Info

Submission Time
Task D - Sum of Divisors
User hmmnrst
Language Ruby (2.7.1)
Score 400
Code Size 174 Byte
Status AC
Exec Time 515 ms
Memory 14344 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 3
AC × 20
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All hand_01.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, sample_01.txt, sample_02.txt, sample_03.txt, sq_01.txt, sq_02.txt, sq_03.txt, sq_04.txt, sq_05.txt, sq_06.txt
Case Name Status Exec Time Memory
hand_01.txt AC 59 ms 14148 KiB
random_01.txt AC 475 ms 14160 KiB
random_02.txt AC 397 ms 14196 KiB
random_03.txt AC 471 ms 14048 KiB
random_04.txt AC 272 ms 14148 KiB
random_05.txt AC 472 ms 14152 KiB
random_06.txt AC 212 ms 14004 KiB
random_07.txt AC 515 ms 14200 KiB
random_08.txt AC 322 ms 14220 KiB
random_09.txt AC 488 ms 14304 KiB
random_10.txt AC 108 ms 14148 KiB
sample_01.txt AC 62 ms 14204 KiB
sample_02.txt AC 60 ms 14344 KiB
sample_03.txt AC 480 ms 14184 KiB
sq_01.txt AC 507 ms 14200 KiB
sq_02.txt AC 473 ms 14140 KiB
sq_03.txt AC 512 ms 14036 KiB
sq_04.txt AC 481 ms 14272 KiB
sq_05.txt AC 475 ms 14096 KiB
sq_06.txt AC 505 ms 14228 KiB