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PKU v. THU (Preliminary Round 2)
Time Limit: 3 s
Memory Limit: 1024 MB
# 1643. Archeologists
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Custom Test
The problem was used in the following contest:
2020-2021 ICPC Southeastern European Regional Programming Contest (SEERC 2020)
XXI Open Cup named after E.V. Pankratiev, Grand Prix of Southeastern Europe
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