题解 | 矩阵乘法

a_h = int(input())
a_w = b_h = int(input())
b_w = int(input())

a = []
b = []
for y in range(a_h):
    a.append(list(map(int, input().split())))
for y in range(b_h):
    b.append(list(map(int, input().split())))

result = [[0] * b_w for _ in range(a_h)]
for y in range(a_h):
    for x in range(b_w):
        tmp = 0
        for i in range(a_w):
            tmp += a[y][i] * b[i][x]
        result[y][x] = tmp
for each_line in result:
    print(" ".join(map(str, each_line)))