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Hack!
Time Limit: 3.0 s
Memory Limit: 64 MB
Hackable ✓
# 7190. Chessboard
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Statement
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Custom Test
Attachments
The problem was used in the following contest:
ICPCCamp 2016. Day 1. ftiasch's Contest #4
Petrozavodsk Winter 2016. Day 7. Xiaoxu Guo Contest 4
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