题解 | #矩阵乘法#

用一维数组计算

x=int(input().strip())
y=int(input().strip())
z=int(input().strip())
A,B=[],[]
for i in range(x):
    line=list(map(int, input().strip().split()))
    A.extend(line)
for i in range(y):
    line=list(map(int, input().strip().split()))
    B.extend(line)
for i in range(x*z):
    dx=i%z  #0,z-1
    dy=i//z #0,x-1
    s=0
    for j in range(y):
        s+=A[dy*y+j]*B[j*z+dx]
    if i%z==0 and i!=0:
        print("")
    print(s, end=" ")