卷积与多项式乘法与FFT

背景zjoi2014力

orzxjq
E [ j ] = F [ j ] / q [ j ]

卷积与多项式乘法

A ( x ) = a 0 + a 1 x + a 2 x 2 + . . . + a n 1 x n 1 B ( x ) = b 0 + b 1 x + b 2 x 2 + . . . + b n 1 x n 1 C ( x ) = a 0 b 0 + ( a 0 b 1 + a 1 b 0 ) x + . . . + ( a n 1 b n 1 ) x n 2 c n = a 0 b n + a 1 b n 1 + . . . = i = 0 n 1 a i b n i 1 i = 1 n a i b n i + 1 1 n ( 0 )

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转载自blog.csdn.net/qq_32461955/article/details/81953371