Problem Statement

You are given a string S of length N consisting of lowercase English letters, ,, and ". It is guaranteed that S contains an even number of ".
Let 2K be the number of " in S. For each $i=1,2,\ldots,K$, the characters from the (2i-1)-th " through the (2i)-th " are said to be enclosed.
Your task is to replace each , in S that is not an enclosed character with . and print the resulting string.

Input

The input is given from Standard Input in the following format:
N
S

Output

Print the answer.

Constraints

• N is an integer between 1 and $2\times 10^5,$ inclusive.
• S is a string of length N consisting of lowercase English letters, ,, and ".
• S contains an even number of ".

Sample Input 1

8
"a,b"c,d

Sample Output 1

"a,b"c.d

In S, "a,b" are enclosed characters, and c,d are not.
The , in S that is not an enclosed character is the seventh character from the left in S, so replace that character with . to get the answer.

Sample Input 2

5
,,,,,

Sample Output 2

.....

Sample Input 3

20
a,"t,"c,"o,"d,"e,"r,

Sample Output 3

a."t,"c."o,"d."e,"r.

见题面 Input 部分

见题面 Output 部分