Submission #4891018

Source Code Expand

import collections as c,math
f=math.factorial
s=input()
n=len(s)
a=n*-~n//2+1
for i in c.Counter(s).values():
  a-=i
  if i>1:
    a-=f(i)//f(i-2)//2
print(a)

Submission Info

Submission Time
Task B - Reverse and Compare
User c_r_5
Language PyPy3 (2.4.0)
Score 500
Code Size 167 Byte
Status AC
Exec Time 829 ms
Memory 75212 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 162 ms 38256 KB
sample_02.txt AC 160 ms 38256 KB
sample_03.txt AC 161 ms 38256 KB
subtask_1_01.txt AC 161 ms 38256 KB
subtask_1_02.txt AC 808 ms 75084 KB
subtask_1_03.txt AC 164 ms 38384 KB
subtask_1_04.txt AC 161 ms 38256 KB
subtask_1_05.txt AC 161 ms 38256 KB
subtask_1_06.txt AC 167 ms 38896 KB
subtask_1_07.txt AC 179 ms 39152 KB
subtask_1_08.txt AC 278 ms 44236 KB
subtask_1_09.txt AC 598 ms 57292 KB
subtask_1_10.txt AC 464 ms 50508 KB
subtask_1_11.txt AC 304 ms 45260 KB
subtask_1_12.txt AC 583 ms 56396 KB
subtask_1_13.txt AC 568 ms 57036 KB
subtask_1_14.txt AC 822 ms 75212 KB
subtask_1_15.txt AC 581 ms 57420 KB
subtask_1_16.txt AC 829 ms 75084 KB
subtask_1_17.txt AC 295 ms 44236 KB