Problems
 
 
# Name    
A
standard input/output
1 s, 256 MB
Submit  x16785
B
standard input/output
1 s, 256 MB
Submit  x24116
C
standard input/output
1 s, 256 MB
Submit  x15731
D
standard input/output
1 s, 256 MB
Submit  x3023
E
standard input/output
1 s, 256 MB
Submit  x1938
F
standard input/output
1 s, 256 MB
Submit  x713
G
standard input/output
1 s, 256 MB
Submit  x658
H
standard input/output
2 s, 256 MB
Submit  x629
I
standard input/output
1 s, 256 MB
Submit  x354
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2021-11-23 18:14:52
Announcement
Problem B. Kalindrome Array
*****
**1) You are allowed to do this "deleting" operation only once. For example, for [1, 2, 3] you can't choose x = 2 first, and then x = 3.

2)The meaning of "Note that you don't have to delete all elements equal to x, and you don't have to delete at least one element equal to x" is that you can delete any number of elements equal to x, from 0 to (number of occurrences of x)**