摘要:
https://www.luogu.org/problemnew/show/P1849 题目描述 After a long day of work, Farmer John completely forgot that he left his tractor in the middle of the 阅读全文
摘要:
http://www.lydsy.com/JudgeOnline/problem.php?id=2101 Time Limit: 10 Sec Memory Limit: 64 MBSubmit: 539 Solved: 294[Submit][Status][Discuss] Descriptio 阅读全文