30pts求助!!!

P4768 [NOI2018] 归程

@[Stephen__Curry](/user/520338) 卷
by Auto_Accepted @ 2023-08-25 15:09:08


调出来了,倍增数组开小,此贴终
by Luckies @ 2023-08-25 15:25:38


@[xuyiluo2](/user/756684) ???%%%
by Luckies @ 2023-08-25 15:25:52


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