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PKU v. THU (Finals)
Time Limit: 5 s
Memory Limit: 512 MB
# 1877. Matryoshka Dolls
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Editorial
The problem was used in the following contest:
Petrozavodsk Summer 2021. Day 7. MIPT Contest, GP of Dolgoprudny
XXII Open Cup named after E.V. Pankratiev, Grand Prix of Dolgoprudny
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