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PKU v. THU (Preliminary Round 2)
Time Limit: 1 s
Memory Limit: 256 MB
# 674. Ascending Tree
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The problem was used in the following contest:
ICPCCamp 2017. Day 6. Japanese Contest
Petrozavodsk Winter 2017. Day 3. U of Tokyo Selection 1 (Karelia Head Cup day 1)
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