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Hack!
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PKU v. THU (Preliminary Round 2)
Time Limit: 1.0 s
Memory Limit: 1024 MB
Hackable ✓
# 9542. Friendship is Magic
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The problem was used in the following contest:
The 3rd Universal Cup. Stage 15: Chengdu
The 2024 ICPC Asia Chengdu Regional Contest
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