Problems
 
 
# Name    
A
standard input/output
1 s, 1024 MB
Submit  x260
B
standard input/output
5 s, 1024 MB
Submit  x130
C
standard input/output
2 s, 1024 MB
Submit  x47
D
standard input/output
1 s, 1024 MB
Submit  x337
E
standard input/output
5 s, 1024 MB
Submit  x39
F
standard input/output
9 s, 1024 MB
Submit  x281
G
standard input/output
1 s, 1024 MB
Submit  x393
H
standard input/output
2 s, 1024 MB
Submit  x362
I
standard input/output
7 s, 1024 MB
Submit  x14
J
standard input/output
1 s, 1024 MB
Submit  x211
K
standard input/output
1 s, 1024 MB
Submit  x337
L
standard input/output
1 s, 1024 MB
Submit  x355
M
standard input/output
1 s, 1024 MB
Submit  x215
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.