题解 | #矩阵乘法#
矩阵乘法
https://www.nowcoder.com/practice/ebe941260f8c4210aa8c17e99cbc663b
import sys x = int(input()) y = int(input()) z = int(input()) a = [] b = [] indx = 0 for line in sys.stdin: indx += 1 if indx <= x: a.append(list(map(int, line.strip().split()))) else: b.append(list(map(int, line.strip().split()))) res = [[0] * z for _ in range(x)] for i in range(x): for j in range(z): res[i][j] = sum([a[i][k] * b[k][j] for k in range(y)]) [print(*line) for line in res]