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 C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

int main(void) {
   
   int N,K;
   
   scanf("%d",&N);
   
   char Moji[N+10];
   
   scanf("%s",Moji);
   scanf("%d",&K);
   
   int i;
   
   for(i = 0;i < N;i++){
      if(Moji[i] != Moji[K-1]) {
         Moji[i] = '*';
      }
   }
   
   printf("%s\n",Moji);
   
   return 0;
}