python实现矩阵连乘问题

n = int(input())  # 输入几个矩阵
p = list(input().split())
for i in range(0, len(p)):
    p[i] = int(p[i])
m = [0*n]*n
s = [0*n]*n

for k in range(2, n+1):
    for i in range(0, n-k+1):
        j = i-k+1
        m[i][j] = m[i+1][j]+p[i+1]*p[i]*p[j+1]
        s[i][j]=i
        for  r in range(i+1, j):
            t = m[i][r]+m[r+1][j]+p[i]*p[r+1]*p[j+1]
            if(t