Contest Clarifications

这句是什么意思呢
Mr. Frog wants to calculate the sum of the cost of the interval [l,r]  [1,n] where l and r are two integers.
Gatling at 2016-10-04 13:17:37

RE:这句是什么意思呢
+1
MrBird at 2016-10-04 13:55:49

RE:这句是什么意思呢
+1
MrBird at 2016-10-04 13:56:25

Reply To:这句是什么意思呢
少了一个符号，抱歉。已修改。
admin at 2016-10-04 13:59:37

RE:这句是什么意思呢
+1s
masterdriver at 2016-10-04 14:30:06