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Hack!
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Time Limit: 1 s
Memory Limit: 256 MB
# 8433. Catenary
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The problem was used in the following contest:
Petrozavodsk Winter 2016. Day 8: GP of Saratov, Karelia Head Cup Contest 2
XVI Open Cup named after E.V. Pankratiev. Grand Prix of Saratov
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