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Hack!
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PKUTS
Time Limit: 2.0 s
Memory Limit: 512 MB
Hackable ✓
# 7777. Intro: Dawn of a New Era
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Custom Test
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The problem was used in the following contest:
The 2nd Universal Cup. Stage 13: Shenyang
The 2023 ICPC Asia Shenyang Regional Contest
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