navigation switch
Home
Contests
Notification
Clarification
Problems
Ranklist
Status
HackStatus
Problem 1001
题目出成这样，出题人也是有责任的吧
MrBirdatbc
| 2017-08-05 19:17:14
Author
至少有两个错题，如果有出题费的话，是不是该缩水2/5啊
Title
Content
