We have a string S consisting of lowercase English letters.
If the length of S is at most K, print S without change.
If the length of S exceeds K, extract the first K characters in S, append ... to the end of them, and print the result.

-----Constraints-----
- K is an integer between 1 and 100 (inclusive).
- S is a string consisting of lowercase English letters.
- The length of S is between 1 and 100 (inclusive).

-----Input-----
Input is given from Standard Input in the following format:
K
S

-----Output-----
Print a string as stated in Problem Statement.

-----Sample Input-----
7
nikoandsolstice

-----Sample Output-----
nikoand...

nikoandsolstice has a length of 15, which exceeds K=7.
We should extract the first 7 characters in this string, append ... to the end of them, and print the result nikoand....

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