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)

#include <stdio.h>

int main(void)
{
  int k,len = 0;
  
  scanf("%d",&k);
  
  char s[k+1],ans[k+4];
  
  for(int i=0; i<k; i++)
    scanf("%s",&s);
  
  while(s[len] != '\0'){
    ans[len] = s[len];
    len++;
  }
  if(len <= k){
    ans[len] = '\0';
    printf("%s\n",ans);
  }
  else{
    for(int i=0; i<3; i++)
      ans[len++] = '.';
    ans[len] = '\0';
    printf("%s\n",ans);
  }
  
  return 0;
}