Login
Register
QOJ.ac
QOJ
QOJ
Contests
Category
Problems
Submissions
Hack!
Blogs
PKU v. THU (Preliminary Round 2)
Time Limit: 1 s
Memory Limit: 256 MB
Eastern GP
E. Blackboard
Statistics
Statement
(Русский)
Submit
Custom Test
Back to the contest
Submit
Run