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Hack!
Time Limit: 5 s
Memory Limit: 512 MB
Hackable ✓
# 4214. Deja Vu
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Statement
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Custom Test
The problem was used in the following contest:
Moscow Pre-Finals Workshop 2020. Day 6. RuCode 2020 Championship
XX Open Cup named after E.V. Pankratiev, Grand Prix of Moscow
RuCode 2020 Division A+B Championship Round
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