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)

/*
 * Created by Dipta Das on 
 * Title: []
 * Problem Link: 
 * Editorial: 
 * Source Code: 
 * Comments: 
*/
#include <bits/stdc++.h>
#define fin freopen("input", "r", stdin);
#define fout freopen("output", "w", stdout);
#define wt(x) cerr << #x << ": " << x << " ";
#define whatis(x) {cerr << #x << ": " << x << endl;}
#define whatis2(x, y) {wt(x); wt(y); cerr << endl;}
#define whatis3(x, y, z) {wt(x); wt(y); wt(z); cerr << endl;}
#define whatis4(x, y, z, a) {wt(x); wt(y); wt(z); wt(a); cerr << endl;}
using namespace std;

typedef long long ll; typedef unsigned long long ull; typedef long double ld;
const ll MOD = 1000000007; const ld PI = acos(-1.0);

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

    int k;
    cin >> k;
    string s;
    cin >> s;
    int n = s.size();
    if (n <= k) {
        cout << s << endl;
    } else {
        for (int i = 0; i < k; ++i) cout << s[i];
        cout << "..." << endl;
    }


    return 0;
}