题解 | 矩阵和向量的点积

def matrix_vector_dot_product(matrix, vector):
    res = []
    for row in matrix:
        if len(row) != len(vector):
            return -1
        sum = 0
        for i in range(len(row)):
            sum += row[i] * vector[i]
        res.append(sum)
    return res
    
    # 补全代码

# 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)