Codeforces Round 137 (Div. 2) · AC 题库

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Codeforces

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Codeforces Round 137 (Div. 2)

2012/09/10 23:45120 分钟222

AShooshuns and SequenceShooshuns and Sequence

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CReducing FractionsReducing Fractions

DOlympiadOlympiad

EDecoding GenomeDecoding Genome