Problems
 
 
# Name    
A
standard input/output
1 s, 256 MB
Submit  x19
B
standard input/output
1 s, 256 MB
Submit  x227
C
standard input/output
1 s, 256 MB
Submit  x67
D
standard input/output
1 s, 256 MB
Submit  x180
E
standard input/output
1 s, 256 MB
Submit  x236
F
standard input/output
1 s, 256 MB
Submit  x23
G
standard input/output
2 s, 256 MB
Submit  x182
H
standard input/output
1.5 s, 256 MB
Submit  x133
I
standard input/output
4 s, 256 MB
Submit  x154
J
standard input/output
1 s, 256 MB
Submit  x235
K
standard input/output
2 s, 256 MB
Submit  x17
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2018-08-19 00:39:34
Problem A. Studying level curves
*****
Announcement
Test cases were fixed and the solutions were rejudged.
2018-08-19 00:30:27
Problem A. Studying level curves
*****
Announcement
There is a problem in the test cases. It will be fixed and the solutions will be rejudged.
2018-08-18 22:24:18
Problem K. Portuguese Pastimes
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Como transformar (2,4,1,3) em (3,1,4,2) a partir de (1,2,3,4). Isso não ficou muito claro para mim
The initial permutation in the statement of problem K is (3, 1, 4, 2) instead of (2, 4, 1, 3).

That is, when you apply (3, 1, 4, 2) from identity you get:
(1, 2, 3, 4) -> (3, 1, 4, 2) -> (4, 3, 2, 1) -> (2, 1, 4, 3) -> (1, 2, 3, 4)

The statement will be fixed soon