B - *e**** ********e* *e****e* ****e** /

### 制約

• 1 \leq K \leq N\leq 10
• S は英小文字からなる長さ N の文字列である
• N,K は整数である

### 入力

N
S
K


### 出力

SK 番目の文字と異なる文字全てを * で置き換えてできる文字列を出力せよ。

### 入力例 1

5
error
2


### 出力例 1

*rr*r


S2 番目の文字は r であり、errorr と異なる文字をすべて * で置き換えると文字列 *rr*r になります。

### 入力例 2

6
eleven
5


### 出力例 2

e*e*e*


### 入力例 3

9
education
7


### 出力例 3

******i**


Score : 200 points

### Problem Statement

You are given a string S of length N consisting of lowercase English letters, and an integer K. Print the string obtained by replacing every character in S that differs from the K-th character of S, with *.

### Constraints

• 1 \leq K \leq N\leq 10
• S is a string of length N consisting of lowercase English letters.
• N and K are integers.

### Input

Input is given from Standard Input in the following format:

N
S
K


### Output

Print the string obtained by replacing every character in S that differs from the K-th character of S, with *.

### Sample Input 1

5
error
2


### Sample Output 1

*rr*r


The second character of S is r. When we replace every character in error that differs from r with *, we get the string *rr*r.

### Sample Input 2

6
eleven
5


### Sample Output 2

e*e*e*


### Sample Input 3

9
education
7


### Sample Output 3

******i**