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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 1024 MB
Total points: 100
2022 浙江省队选拔赛 Day 1 (ZJOI 2022 Day 1)
A. 树
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This problem is prepared by
lcd
,
lwn_16
, and
suika_predator
.
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