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Hack!
Time Limit: 1 s
Memory Limit: 1024 MB
Total points: 100
# 6176. 天文奇观问题
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The problem was used in the following contest:
2021 福建省队选拔赛 Day 2 (FJOI 2021 Day 2)
2021 河北省队选拔赛·补测
Note: 这个题数据好像不太真。
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