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<stdio.h>
#include<string.h>
 
int main(){
  int K;
  while(scanf("%d",&K)==0);
  char S[150];
  while(scanf("%s",S)==0);
  int l=strlen(S);
  char a[]="...";
  char T[150];
  
  int i;
  for(i=0;i<K;i++){
   T[i]=S[i];
  }
  
  T[K]='\0';
  
  if(l<=K){
    printf("%s\n",S);
  }else if(l>K){
    printf("%s%s\n",T,a);
  }
  
  
  
  return 0;
}