瓶颈是乘法取模吧
by liqingyang @ 2022-09-13 16:14:42
@[liqingyang](/user/272088) 好像有道理/fad
by vectorwyx @ 2022-09-13 16:39:44
@[vectorwyx](/user/238408) 矩阵大小不算特别大？估计 $500\times 500$ 左右才会比较明显。
by Usada_Pekora @ 2022-09-13 16:41:30
小矩阵矩乘建议把乘法的结果加在一起最后只执行n^2次取模，如果long long撑得住
by Krystallos @ 2022-09-13 16:51:42
同意楼上，亲测卡常效率显著
by Harry27182 @ 2022-09-13 17:12:28