不过我一看到这题是CTSC（IOI中国代表队选拔赛）就给跪了。。。。。。
再看题目又跪了。。。。。。
by li20082008li @ 2013-08-17 12:09:02
为什么不能提交啊？
by 市场花园行动 @ 2017-10-11 22:12:51
考古
by Happynewyear @ 2018-12-16 18:16:05
@[Happynewyear](/space/show?uid=87746) 考古
by team109 @ 2019-10-05 10:33:26
@[team109](/space/show?uid=106637) 考古
by Happynewyear @ 2019-10-05 18:12:39
@[Happynewyear](/space/show?uid=87746) 考古
by t162 @ 2019-10-07 11:38:03
@[Bambusoideae](/space/show?uid=106140) 考古
by Happynewyear @ 2019-10-07 15:01:24
@[Happynewyear](/user/87746) 考古
by zhoukangyang @ 2020-07-15 16:35:25
@[zhoukangyang](/user/173660) 考古
by Happynewyear @ 2020-07-20 14:18:01
@[Happynewyear](/user/87746) 考古
by zhoukangyang @ 2020-07-20 14:18:28