Problem 3732. -- [北京2017冬令营]太空飞船

3732: [北京2017冬令营]太空飞船

Time Limit: 10 Sec  Memory Limit: 256 MB
Submit: 5  Solved: 3
[Submit][Status][Web Board]

Description

http://begin.lydsy.com/JudgeOnline/upload/3732.pdf

Input

Output

HINT

Source

[Submit][Status]