Problems
 
 
# Name    
A
standard input/output
2 s, 256 MB
Submit  x2460
B
standard input/output
2 s, 256 MB
Submit  x398
C
standard input/output
2 s, 256 MB
Submit  x196
D
standard input/output
1 s, 256 MB
Submit  x88
E
standard input/output
4 s, 1024 MB
Submit  x5
F
standard input/output
2 s, 256 MB
Submit  x878
G
standard input/output
0.5 s, 256 MB
Submit  x588
H
standard input/output
2 s, 256 MB
Submit  x1528
I
standard input/output
2 s, 256 MB
Submit  x183
J
standard input/output
2 s, 256 MB
Submit  x208
K
standard input/output
2 s, 256 MB
Submit  x12
L
standard input/output
2 s, 256 MB
Submit  x1215
M
standard input/output
2 s, 256 MB
Submit  x46
N
standard input/output
5 s, 256 MB
Submit  x5
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2023-02-19 14:31:45
Announcement
Problem N. Count Permutations
*****
The explanations of the samples in problem N are wrong.

You should replace i with n+1-i in the permutations given in the explanations of the samples.