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PKU v. THU (Preliminary Round 2)
Time Limit: 1 s
Memory Limit: 512 MB
# 2826. 历史行程
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The problem was used in the following contest:
2019 清华大学学生程序设计竞赛暨高校邀请赛(THUPC 2019)
题目来自 THUPC 2019,Git 仓库地址:
https://github.com/wangyurzee7/THUPC2019
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