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PKU v. THU (Preliminary Round 2)
Time Limit: 1 s
Memory Limit: 512 MB
# 2833. Hamilton
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Statement
(Open Cup)
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Custom Test
The problem was used in the following contest:
第六届中国大学生程序设计竞赛总决赛（CCPC Final 2020）
XXI Open Cup named after E.V. Pankratiev, Grand Prix of Beijing
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