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