Problems
 
 
# Name    
A
standard input/output
1 s, 1024 MB
Submit  x321
B
standard input/output
5 s, 1024 MB
Submit  x164
C
standard input/output
2 s, 1024 MB
Submit  x63
D
standard input/output
1 s, 1024 MB
Submit  x407
E
standard input/output
5 s, 1024 MB
Submit  x52
F
standard input/output
9 s, 1024 MB
Submit  x363
G
standard input/output
1 s, 1024 MB
Submit  x472
H
standard input/output
2 s, 1024 MB
Submit  x440
I
standard input/output
7 s, 1024 MB
Submit  x22
J
standard input/output
1 s, 1024 MB
Submit  x257
K
standard input/output
1 s, 1024 MB
Submit  x410
L
standard input/output
1 s, 1024 MB
Submit  x433
M
standard input/output
1 s, 1024 MB
Submit  x275
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.