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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 128 MB
# 3820. Antisocial network
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Custom Test
The problem was used in the following contest:
Moscow Pre-Finals Workshops 2022 Day 2
Moscow International Workshops 2016 Day 8
The 2016 Polish Collegiate Programming Contest (AMPPZ 2016)
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