Problems
 
 
# Name    
A
window.in / standard output
2 s, 64 MB
Submit  x864
B
standard input/output
1 s, 64 MB
Submit  x878
C
standard input/output
2 s, 64 MB
Submit  x700
D
standard input/output
1.5 s, 4 MB
Submit  x423
E
standard input/output
1 s, 64 MB
Submit  x384
F
standard input/output
2 s, 64 MB
Submit  x654
G
standard input/output
1 s, 64 MB
Submit  x597
H
standard input/output
2 s, 250 MB
Submit  x178
I
standard input/output
2 s, 64 MB
Submit  x600
J
standard input/output
1 s, 64 MB
Submit  x695
K
standard input/output
2 s, 64 MB
Submit  x47
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2020-08-13 05:28:12
Problem D. Sequences
*****
Announcement
There is a mistake in the statement of the problem D -- Xi CAN be 0
2016-08-26 23:16:04
Problem H. Weekend
*****
Announcement
Friends could be at the same intersection.
2016-06-14 12:00:18
we are sorry there was a mistake in time limit , now it's fixed and all solutions have been rejudged , sorry again