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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 512 MB
# 2887. 区间矩阵乘法
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The problem was used in the following contest:
2021 清华大学学生程序设计竞赛暨高校邀请赛(THUPC 2021)初赛
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