navigation switch
Home
Contests
Notification
Clarification
Problems
Ranklist
Status
HackStatus
Problem 1001
n==1时怎么算
shadowknife
| 2016-12-17 19:46:39
Author
rt
shadowknife
| 2016-12-17 19:48:21
# 1
是1002，手抖选错了
Title
Content
