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 C# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

namespace Main
{
    class Program
    {
        static void Main(string[] args)
        {
            //ここから
            //int n=Readint();
            //string[] str = Console.ReadLine().Split(' ');

            int n = Readint();
            string s = Console.ReadLine();

            if (s.Length < n) Console.WriteLine(s);
            else
            {
                for(int i = 0; i < n; i++) { Console.Write(s[i]); }
                Console.WriteLine("...");
            }

            //ここまで
        }

        
        static int Readint()
        {
            return int.Parse(Console.ReadLine());
        }

        static long Readlong()
        {
            return long.Parse(Console.ReadLine());
        }

        static int Min(int a,int b)
        {
            if (a < b) return a;
            return b;
        }

        static int Max(int a, int b)
        {
            if (a > b) return a;
            return b;
        }
        

    }

}