Problems
 
 
# Name    
A
standard input/output
1 s, 1024 MB
Submit  x330
B
standard input/output
5 s, 1024 MB
Submit  x170
C
standard input/output
2 s, 1024 MB
Submit  x67
D
standard input/output
1 s, 1024 MB
Submit  x421
E
standard input/output
5 s, 1024 MB
Submit  x55
F
standard input/output
9 s, 1024 MB
Submit  x372
G
standard input/output
1 s, 1024 MB
Submit  x489
H
standard input/output
2 s, 1024 MB
Submit  x457
I
standard input/output
7 s, 1024 MB
Submit  x22
J
standard input/output
1 s, 1024 MB
Submit  x265
K
standard input/output
1 s, 1024 MB
Submit  x425
L
standard input/output
1 s, 1024 MB
Submit  x447
M
standard input/output
1 s, 1024 MB
Submit  x284
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.