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2018 北京队选拔赛 Day 1 (BJOI 2018 Day 1) (北京信息学集训队结业考试)

#	Problem
A	二进制
B	染色
C	求和

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Title	Content	Time
None

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Asker	When	Questions
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Contest Ended

Ruleset: OI

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Penalty: 0 minute(s)
Submission limit / problem: Unlimited (10 seconds limit will apply)

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