给定n个矩阵｛A1,A2,…,An｝，其中Ai与Ai+1是可乘的，i=1,2 ,…,n-1。如何确定计算矩阵连乘积的计算次序，使得依此次序计算矩阵连乘积需要的数乘次数最少。-N matrix of a given (A1, A2, ..., An), which Ai and Ai+1 is the take, i = 1,2, ..., n-1. How to determine the calculation of the matrix product of the calculation of even order, the order of calculating the matrix and so the needs of even the product by the number of at least a few.