Problem:
Score: 200 points

Problem Statement

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 1

7
nikoandsolstice

Sample Output 1

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....

Sample Input 2

40
ferelibenterhominesidquodvoluntcredunt

Sample Output 2

ferelibenterhominesidquodvoluntcredunt

The famous quote from Gaius Julius Caesar.

Solution in Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.*;
class Main {

  static Integer[] PON_ARR = new Integer[]{0,1,6,8};
  static  Integer[] BON_ARR = new Integer[]{3};
  static  List<Integer> PON_LIST = Arrays.asList(PON_ARR);
  static  List<Integer> BON_LIST = Arrays.asList(BON_ARR);

  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int k = sc.nextInt();
    String s = sc.nextLine();
    
    int lenS = s.length();
    
    if( lenS > k ) {
        System.out.println( s.substring(0, k) + "...");    
    }else{
        System.out.println( s );    
    }
  }
}