题解 | 矩阵和向量的点积

def matrix_vector_dot_product(matrix, vector):
    # 补全代码

    if len(matrix[0]) != len(vector):
        return -1

    else:
        result = []
        for i in range(len(matrix)):
            sums =0
            for j in range(len(matrix[i])):
                sums += matrix[i][j] * vector[j]
            result.append(sums)
        return result
# 主程序
if __name__ == "__main__":
    # 输入矩阵和向量
    matrix_input = input()
    vector_input = input()

    # 处理输入
    import ast
    matrix = ast.literal_eval(matrix_input)
    vector = ast.literal_eval(vector_input)

    # 调用函数计算点积
    output = matrix_vector_dot_product(matrix, vector)
    
    # 输出结果
    print(output)