Submission #1540235

Source Code Expand

A = gets.chop
n = A.size * (A.size-1) / 2
m = A.chars.group_by(&:itself).values.map(&:size).map{|a|
  a * (a - 1) / 2
}.inject(:+)
p n - m + 1

Submission Info

Submission Time
Task B - Reverse and Compare
User letranger
Language Ruby (2.3.3)
Score 500
Code Size 147 Byte
Status AC
Exec Time 82 ms
Memory 15228 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 23
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt
Case Name Status Exec Time Memory
sample_01.txt AC 7 ms 1788 KB
sample_02.txt AC 7 ms 1788 KB
sample_03.txt AC 7 ms 1788 KB
subtask_1_01.txt AC 7 ms 1788 KB
subtask_1_02.txt AC 78 ms 14460 KB
subtask_1_03.txt AC 7 ms 1788 KB
subtask_1_04.txt AC 7 ms 1788 KB
subtask_1_05.txt AC 7 ms 1788 KB
subtask_1_06.txt AC 7 ms 1788 KB
subtask_1_07.txt AC 14 ms 2812 KB
subtask_1_08.txt AC 81 ms 15228 KB
subtask_1_09.txt AC 79 ms 14468 KB
subtask_1_10.txt AC 80 ms 14496 KB
subtask_1_11.txt AC 82 ms 14844 KB
subtask_1_12.txt AC 79 ms 14572 KB
subtask_1_13.txt AC 79 ms 14460 KB
subtask_1_14.txt AC 78 ms 14460 KB
subtask_1_15.txt AC 78 ms 14460 KB
subtask_1_16.txt AC 79 ms 14460 KB
subtask_1_17.txt AC 79 ms 14460 KB