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PKU v. THU (Preliminary Round 2)
Time Limit: 3 s
Memory Limit: 512 MB
# 2596. Even Forest
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Custom Test
The problem was used in the following contest:
Petrozavodsk Winter 2022. Day 5. Yandex Cup
XXII Open Cup named after E.V. Pankratiev, Grand Prix of Grushevka
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