~~很正常的系统 feature……~~
by sty0948 @ 2024-04-24 20:23:47
你谷特性
by lzh009 @ 2024-04-24 20:23:51
我在At筛黄题的时候还碰到过红题
by xinxin2022 @ 2024-04-24 20:24:17
洛谷用少了
by _int123_ @ 2024-04-24 20:32:25
筛蓝题时筛到 2 个黑题和 2 个黄题，洛谷筛选原理是什么啊
by a1111a @ 2024-04-24 20:33:01
feature
by xiangzhenze611 @ 2024-04-24 20:34:35
@[a1111a](/user/1043449) 因为他们一开始是蓝题
by xiangzhenze611 @ 2024-04-24 20:34:56
@[xiangzhenze611](/user/1005749) 蓝题改黑题？
by a1111a @ 2024-04-24 20:37:52
@[a1111a](/user/1043449) 其实也不是不可能
by xiangzhenze611 @ 2024-04-24 20:39:23
@[a1111a](/user/1043449)
[eee......](https://www.luogu.com.cn/problem/list?difficulty=5&type=AT&page=6)
by xpg007 @ 2024-04-24 20:44:08