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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 1024 MB
# 2544. Flatland Currency
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Custom Test
The problem was used in the following contest:
Petrozavodsk Winter 2022. Day 1. Kyoto U Contest 2
XXII Open Cup named after E.V. Pankratiev, Grand Prix of Kyoto
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