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PKU v. THU (Finals)
Time Limit: 2 s
Memory Limit: 512 MB
# 1261. Inv
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Statement
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Custom Test
The problem was used in the following contest:
Petrozavodsk Summer 2020. Day 2. SPb SU LOUD ENOUGH Contest
XXI Open Cup named after E.V. Pankratiev, Grand Prix of SPb
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