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Hack!
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PKU v. THU (Finals)
Time Limit: 15 s
Memory Limit: 1024 MB
# 5510. Line Replacements
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自定义测试
The problem was used in the following contest:
The 2022 ICPC Polish Collegiate Programming Contest (AMPPZ 2022)
The 1st Universal Cup. Stage 3: Poland
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