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: Wrong Answer)

/*input 
40
ferelibenterhominesidquodvoluntcredunt
*/


#include <bits/stdc++.h>
using namespace std;
 

 
 
#define int long long int
#define rep(i,n) \
    for(int i = 0; i < n; i++)
#define rep2(i, a, b) \
    for(int i = a; i < b; i++)
#define all(c) \
    c.begin(), c.end()
#define init(arr, num) \
    memset(arr, num, sizeof(arr))

#define fast\
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define inputFile \
    freopen("input.txt", "r", stdin); 
#define outputFile \
    freopen("output.txt", "w", stdout);
#define modM 998244353
#define PI 3.1415926535897932
#define F first
#define S second  
#define pb push_back  
 
#ifdef gaviria
#define TRACE
#endif
#ifdef TRACE
#define trace(...) _f(#VA_ARGS, __VA_ARGS_)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1) {
    cout << name << " : " << arg1 << std::endl;
 
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args) {
    const char* comma = strchr(names + 1, ','); cout.write(names, comma - names) << " : " << arg1 << " | "; __f(comma + 1, args...);
}
#else
#define trace(...)
#endif
 
 
typedef long long ll;
typedef vector<int> vi;
typedef vector< vi > vvi;
typedef pair< int, int > ii;
typedef unordered_set<int> usi;
 
ll n,i,j,k,m,x,c;
int a, k1;



void solve() 
{cin>>n;
string a;
cin>>a;
if(a.size()<n)
    cout<<a;
else cout<<a.substr(0,n)<<"...";

} 

 
 
 
signed main()
{
 
    // inputFile;
    fast;
    int T = 1;
//cin >> T;

    while(T--){
//cout<<"Case #"<<(h-T)<<": ";
        solve();
cout<<endl;
     
        
        
 
    }
    
    
    return 0;
 
}