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Hack!
Time Limit: 2.0 s
Memory Limit: 64 MB
# 7216. Boxes on tree
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Custom Test
Attachments
The problem was used in the following contest:
ICPCCamp 2016. Day 3. Grand Prix of China
Petrozavodsk Winter 2016. Day 9. Grand Prix of China, ICL 2016 Selection
XVI Open Cup named after E.V. Pankratiev. Grand Prix of China
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