Submission #14847505

Source Code Expand

N = gets.to_i

s,k,n = 0,1,N
while k<=n
	m = N/k
	s += (k-1)*k*(n-m)*(n+m+1)/2
	s += k*m*(m+1)
	k,n = k+1,m
end
s -= (k-1)*m*(m+1) if m<k-1
p s/2

Submission Info

Submission Time
Task D - Sum of Divisors
User ds14050
Language Ruby (2.7.1)
Score 400
Code Size 157 Byte
Status AC
Exec Time 68 ms
Memory 14320 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 61 ms 14056 KiB
random_01.txt AC 67 ms 14220 KiB
random_02.txt AC 55 ms 14164 KiB
random_03.txt AC 68 ms 14124 KiB
random_04.txt AC 59 ms 14168 KiB
random_05.txt AC 56 ms 14196 KiB
random_06.txt AC 63 ms 14200 KiB
random_07.txt AC 65 ms 13988 KiB
random_08.txt AC 61 ms 14088 KiB
random_09.txt AC 64 ms 14220 KiB
random_10.txt AC 62 ms 14096 KiB
sample_01.txt AC 61 ms 14204 KiB
sample_02.txt AC 67 ms 14144 KiB
sample_03.txt AC 61 ms 14172 KiB
sq_01.txt AC 66 ms 14136 KiB
sq_02.txt AC 64 ms 14096 KiB
sq_03.txt AC 61 ms 14184 KiB
sq_04.txt AC 62 ms 14184 KiB
sq_05.txt AC 61 ms 14288 KiB
sq_06.txt AC 63 ms 14320 KiB