题解 | 计算矩阵的积

import numpy as np
def matrixmul(a,b):
    # 补全代码
    mata=np.array(matrixa)
    matb=np.array(matrixb)
    if mata.shape[1]!=matb.shape[0]:
        return -1
    return (mata@matb).tolist()
# 主程序
if __name__ == "__main__":
    # 输入矩阵
    matrix_inputa = input()
    matrix_inputb = input()

    # 处理输入
    import ast
    matrixa = ast.literal_eval(matrix_inputa)
    matrixb = ast.literal_eval(matrix_inputb)

    # 调用函数计算逆矩阵
    output = matrixmul(matrixa,matrixb)
    
    # 输出结果
    print(output)