在BZOJ上看了一下，样例输出实为
```
1
1
2
2
2
```
望管理员改正@[chen_zhe](/space/show?uid=8457) @[yjjr](/space/show?uid=5088)
by AKEE @ 2018-02-11 13:51:27
@[AKEE](/space/show?uid=31264) fixed
by chen_zhe @ 2018-02-11 14:15:28