求助

灌水区

_Constantine_ @ 2025-01-10 19:08:10

\sum_{i=l}^r (\sum_{j=l}^i a_j)moda_i

是啥意思

by ChenHaoQi @ 2025-01-10 19:10:32

@Constantine 你是不懂 \sum 的意思吗

by _Constantine_ @ 2025-01-10 19:14:11

不明白@ChenHaoQi

by NIOP_T1_CFF @ 2025-01-10 19:19:57

@Constantinesigma，求和（你可以到网上搜搜）

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