题目修改汇总：
 A balls  
  范围  0 <= n < 16 --> 0 <= n <= 16
  all the balls are numbered from 1 to n --> all the balls are numbered from 1 to m
  在html里面已改过，但在pdf里没有改。 
   
D firing range
  output:
  standing for the number of arcs which weren't covered by fire --> 
   standing for the number of arcs which were covered by fire k times.

   (-109<=li<ri<=109, li<m) --> (-109<=li<ri<=109, 0<=li<m)

and data like (300, 560) won't appear(because (300,560) = (300,200), li > ri is invalid).   -->
and if a data like (300, 200) appears， that means this arc is like 300->0->200,  not 200->300.
即：跨0度的弧是会存在的。

  之前题目里有对k的描述。

• Re:题目修改汇总 (729) CO2 2006-10-21 16:47:55
  • 请问：按你的意思Ｄ里面的li和ri不一定要满足li<ri,对吗？　然后li>ri表示li->0->ri? (63) Hacker_QC 2006-10-21 17:18:52
  • Re:题目修改汇总 (726) CO2 2006-10-21 18:24:29