512MB开不了30000000 long long?

P4438 [HNOI/AHOI2018] 道路

为您点赞，您一定能成为分子（雾
by Juan_feng @ 2018-10-20 09:42:28

loli式鸡汤
by Juan_feng @ 2018-10-20 09:42:54

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