102180: [AtCoder]ABC218 A - Weather Forecast

Problem Statement

You are given a string $S$, which represents a weather forecast for the seven days starting tomorrow.
The $i$-th of those seven days is forecast to be sunny if the $i$-th character of $S$ is o, and rainy if that character is x.

Tell us whether the $N$-th day is forecast to be sunny.

Constraints

• $N$ is an integer between $1$ and $7$ (inclusive).
• $S$ is a string of length $7$ consisting of o and x.

Input

Input is given from Standard Input in the following format:

$N$
$S$

Output

Print Yes if the $N$-th of the seven days starting tomorrow is forecast to be sunny, and No if that day is forecast to be rainy.

Sample Input 1

4
oooxoox

Sample Output 1

No

The forecast for each of the seven days starting tomorrow is as follows: sunny, sunny, sunny, rainy, sunny, sunny, rainy.
In particular, the fourth day is forecast to be rainy.

Sample Input 2

7
ooooooo

Sample Output 2

Yes

问题描述

给你一个字符串$S$，它表示从明天开始的七天天气预报。

如果$S$的第$i$个字符是o，那么那七天中的第$i$天预报为晴天；如果那个字符是x，那么那天预报为雨天。

告诉我们第$N$天预报是否为晴天。

限制条件

• $N$是一个介于1和7（包括）之间的整数。
• $S$是一个长度为7的字符串，由o和x组成。

输入

输入通过标准输入给出如下格式：

$N$
$S$

输出

如果从明天开始的七天中的第$N$天预报为晴天，打印Yes；如果那天预报为雨天，打印No。

样例输入1

4
oooxoox

样例输出1

No

从明天开始的七天预报如下：晴天，晴天，晴天，雨天，晴天，晴天，雨天。

特别是第四天预报为雨天。

样例输入2

7
ooooooo

样例输出2

Yes