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Hack!
Time Limit: 15 s
Memory Limit: 1024 MB
# 6133. Mirror
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Statement
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Custom Test
The problem was used in the following contest:
The 2018 ICPC Asia Qingdao Regional Contest
The 1st Universal Cup. Stage 9: Qingdao
The 2nd Universal Cup. Stage Ω: Atlantis (
Prime
Contest)
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