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1 solutions
-1
_chjich_
黄河在咆哮!
LV 7
@
2025-10-2 17:20:49
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WD与积木
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ID
9191
Time
2000ms
Memory
125MiB
Difficulty
7
Tags
数学
O2优化
生成函数
快速傅里叶变换 FFT
快速数论变换 NTT
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