题解 | 矩阵和向量的点积

def matrix_vector_dot_product(matrix, vector):
    if not matrix or not vector:
        return -1

    if isinstance(vector[0],list):
        return -1
    cols=len(matrix[0])
    if cols!=len(vector):
        return -1
    result=[]
    for row in matrix:
        product=sum(row_i*col_i for row_i,col_i in zip(row,vector))
        result.append(product)
    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)