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PKU v. THU (Preliminary Round 2)
Time Limit: 3.0 s
Memory Limit: 1024 MB
Hackable ✓
# 7857. (-1,1)-Sumplete
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The problem was used in the following contest:
The 2nd Universal Cup. Stage 15: Macau
The 2023 ICPC Asia Macau Regional Contest
第十届中国大学生程序设计竞赛 郑州站 热身赛（CCPC 2024 Zhengzhou, Practice）
This problem is prepared by
roundgod
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