AtCoder Shop has N products. The price of the i-th product (1≤i≤N) is P i ​ . The i-th product (1≤i≤N) has C i ​ functions. The j-th function (1≤j≤C i ​ ) of the i-th product (1≤i≤N) is represented as an integer F i,j ​ between 1 and M, inclusive. Takahashi wonders whether there is a product that is strictly superior to another. If there are i and j (1≤i,j≤N) such that the i-th and j-th products satisfy all of the following conditions, print Yes; otherwise, print No. P i ​ ≥P j ​ . The j-th product has all functions of the i-th product. P i ​ >P j ​ , or the j-th product has one or more functions that the i-th product lacks. Constraints 2≤N≤100 1≤M≤100 1≤P i ​ ≤10 5 (1≤i≤N) 1≤C i ​ ≤M (1≤i≤N) 1≤F i,1 ​ <F i,2 ​ <⋯<F i,C i ​ ​ ≤M (1≤i≤N) All input values are integers. 什么意思

这道题目描述了一个 AtCoder 商店的产品情况。商店有 N 种产品，第 i 种产品的价格为 P_i。每个产品有 C_i 个功能，第 i 种产品的第 j 个功能用一个介于 1 和 M 之间的整数 F_i,j 表示。

Takahashi 想知道是否存在一种产品严格优于另一种产品。如果存在满足以下条件的 i 和 j（1≤i,j≤N）的产品，就输出 Yes；否则输出 No。

- P_i ≥ P_j
- 第 j 个产品具有第 i 个产品的所有功能
- P_i > P_j 或者第 j 个产品具有第 i 个产品缺少的一个或多个功能

约束条件：
2≤N≤100
1≤M≤100
1≤P_i≤10^5（1≤i≤N）
1≤C_i≤M（1≤i≤N）
1≤F_i,1<F_i,2<⋯<F_i,C_i≤M（1≤i≤N）
所有输入值均为整数。

相关问题

NVIDIA-SHI has failed because it couldn't communicate with the NVIDIA.dr iver':

这个错误通常表示NVIDIA驱动程序无法与NVIDIA硬件之间进行通信。可能的原因包括：硬件故障，驱动程序错误或显卡与主板之间存在问题。为了解决此问题，可以尝试以下步骤：

1. 重新安装NVIDIA驱动程序。

2. 更新主板芯片组驱动程序和BIOS。

3. 确保显卡已正确插入主板插槽中并且接触良好。

4. 如果您使用的是笔记本电脑，请确保电池已充满电并将电源连接到电源插座。

如果上述步骤无效，则可能需要更换显卡或主板。

引用:C++ convenience class to communicate with a Matlab instance.[^1]。

unity Coroutine couldn't be started because the the game object 'ModelsScene' is i

This error message in Unity usually occurs when you try to start a coroutine on a GameObject that is inactive or has been destroyed.

To fix this issue, you should first check if the GameObject 'ModelsScene' is active and not destroyed. If it is destroyed or inactive, you can use the `GameObject.Find` method to get a reference to a new instance of the object, if it exists.

Here's an example of how you can modify your code to handle this error:

public GameObject modelsScene;

void Start()
{
    StartCoroutine(MyCoroutine());
}

IEnumerator MyCoroutine()
{
    // Check if the modelsScene object exists and is active
    if (modelsScene != null && modelsScene.activeInHierarchy)
    {
        // Your coroutine code here
        yield return new WaitForSeconds(2.0f);
    }
    else
    {
        Debug.LogError("The modelsScene object is invalid or inactive.");
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}

By checking if the `modelsScene` object is valid and active before starting the coroutine, you can avoid the error message you were experiencing.