Problems
 
 
# Name    
A
standard input/output
1 s, 1024 MB
Submit  x307
B
standard input/output
5 s, 1024 MB
Submit  x155
C
standard input/output
2 s, 1024 MB
Submit  x58
D
standard input/output
1 s, 1024 MB
Submit  x394
E
standard input/output
5 s, 1024 MB
Submit  x49
F
standard input/output
9 s, 1024 MB
Submit  x350
G
standard input/output
1 s, 1024 MB
Submit  x454
H
standard input/output
2 s, 1024 MB
Submit  x424
I
standard input/output
7 s, 1024 MB
Submit  x20
J
standard input/output
1 s, 1024 MB
Submit  x247
K
standard input/output
1 s, 1024 MB
Submit  x398
L
standard input/output
1 s, 1024 MB
Submit  x417
M
standard input/output
1 s, 1024 MB
Submit  x265
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2025-10-21 11:10:41
Announcement
Problem J. Jumbled Packets
*****
For compatibility with the Codeforces platform, your solution runs in interactive mode against a jury program. A poorly implemented interaction may result in Idleness limit exceeded or Runtime Error instead of Wrong Answer.

To handle input and output correctly, do not attempt to read extra data from the input. After finishing your output, don't forget to print a newline character and flush your output.
2025-10-20 15:47:59
Announcement
General announcement
*****
The sample testcases and testing tool are provided in "Samples (ZIP)" at the contest materials.