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Hack!
Time Limit: 4.5 s
Memory Limit: 512 MB
# 1868. The Struggle
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Custom Test
The problem was used in the following contest:
Petrozavodsk Summer 2021. Day 6. XJTU Contest, GP of XJTU
XXII Open Cup named after E.V. Pankratiev, Grand Prix of Xi'an
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