123rrc

UID: 38670, 注册于 2023-12-31 13:22:08, 最后登录于 2024-12-11 15:32:21, 最后活动于 2024-12-7 17:51:03.

解决了 1 道题目，RP: 0 (No. ?)

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$n^2$ 过百万，暴力碾标算。
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luogu#P2393
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This person is lazy and didn't join any contests or homework.
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This person is lazy and didn't write any solutions.
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