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++ (GCC 9.2.1) (judge verdict: Accepted)

#include<iostream>
#include<stdio.h>
#include<string>
#include<vector>
#include<algorithm>
#include<cmath>
#include<iomanip>
#include<numeric>
#include<map>
using namespace std;
typedef long long int ll;
 
ll gcd(ll a, ll b){
    if (b == 0) return a;

    return gcd(b, a % b);
}

int main(){
    int K;
    string S;
    cin >> K >> S;

    if (S.length() <= K) cout << S << endl;
    else {
        for (int i = 0; i < K; i++){
            cout << S[i];
        }
        cout << "..." << endl;
    } 
    
}