Login
Register
QOJ.ac
QOJ
QOJ
Contests
Category
Problems
Submissions
Hack!
Blogs
PKU v. THU (Preliminary Round 2)
Time Limit: 1 s
Memory Limit: 512 MB
[
+6
]
Shenyang Regional 2022
K. Security at Museums
Statistics
Statement
Submit
Custom Test
Back to the contest
Source code:answer
Language
C++ 98
C++ 11
C++ 14
C++ 17
C++ 20
C++ 23
C 89
C 99
C 11
D
Python 3
Java 8
Java 11
Pascal
Rust
Upload by editor
Upload from local
use advanced editor
Browse
Submit
Source code:answer
Language
C++ 98
C++ 11
C++ 14
C++ 17
C++ 20
C++ 23
C 89
C 99
C 11
D
Python 3
Java 8
Java 11
Pascal
Rust
Upload by editor
Upload from local
use advanced editor
Browse
Text file:input.txt
Upload by editor
Upload from local
use advanced editor
Browse
Run