题解 | 矩阵乘法

import sys

x = int(input())
y = int(input())
z = int(input())
l1=[]

for i in range(x):
    l = list(map(int,input().split()))
    l1.append(l)
l2=[]
for i in range(y):
    ll = list(map(int,input().split()))
    l2.append(ll)

l3=[[0]*z for i in range(x)]
def matrixmu(l1,l2,l3,x,y,z):
    #乘之后的矩阵，长度和L1一样，宽度（列数）和l2一样
    for i in range(x):
        for j in range(y):
            for k in range(z):
                l3[i][k] += l1[i][j] * l2[j][k]
    return l3

l3=matrixmu(l1,l2,l3,x,y,z)

for i in range(x):
    for k in range(z):
        print(l3[i][k],end=' ')
    print()