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Hack!
Day 1
Day 2
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Time Limit: 2.0 s
Memory Limit: 512 MB
# 7196. Perfect Matching
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Custom Test
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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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