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 <bits/stdc++.h>
#include <algorithm>
#include <math.h>
#include <cstring>

#define test(t) while(t--)

#define ll  long long int

#define in  cin>>
#define out cout<<
#define en "\n"
#define sp " "
#define pb push_back
#define fast()  ios_base::sync_with_stdio(false);cin.tie(0);



using namespace std;

void solve()
{ll k;
  in k;
  string s;
  in s;
  if(s.size()>k){
  for(ll i=s.size();i>k;i--){
    s.pop_back();
  }
  string p="...";
  out s+p<<en;}
  else
    out s<<en;
}

int main(){ fast()
             //freopen("input.txt","r",stdin);
             //freopen("output.txt","w",stdout);
             ll t=1;
            //cin>>t;
            test(t){
            solve();
            }
return 0;}