Problem:
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**

Solution in Go (1.14.1) (judge verdict: Accepted)

package main

import "fmt"

func main() {
	// Code for B - *e**** ********e* *e****e* ****e**
	var N int
	fmt.Scanf("%d", &N)

	var S string
	fmt.Scanf("%s", &S)

	var K int
	fmt.Scanf("%d", &K)

	for i := 0; i < N; i++ {
		if S[i] != S[K-1] {
			fmt.Printf("*")
		} else {
			fmt.Printf("%c", S[i])
		}
	}
	fmt.Println()
}