Exber @ 2021-08-07 22:02:22
rt，大型疑惑现场，本想测试暴力正确性，没想到一遍 AC 了？？
by cyffff @ 2021-08-07 22:16:42
n^2 6.5s
by FxorG @ 2021-08-07 22:31:34
@cyffff cyf忘了自己开完隐（）
by vegetable_king @ 2021-08-08 08:24:15
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