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Hack!
Time Limit: 5 s
Memory Limit: 256 MB
Hackable ✓
# 7415. Fast Spanning Tree
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Statement
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Custom Test
The problem was used in the following contest:
Petrozavodsk Summer 2019. Day 2. 300iq Contest 2, Grand Prix of Kazan
XX Open Cup named after E.V. Pankratiev, Grand Prix of Kazan
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