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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 512 MB
Interactive
# 8086. Cloyster
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The problem was used in the following contest:
Petrozavodsk Summer 2019. Day 5. Radewoosh + mnbvmar Contest
XX Open Cup named after E.V. Pankratiev, Grand Prix of Warsaw
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