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>

int main (void){
    char str[100];
    int num;
    int i;
    int cnt = 0;

    scanf("%d\n",&num);
    scanf("%s",str);
    for(cnt = 0;str[cnt]!='\0';cnt++);
    if(num >= cnt){
        printf("%s",str);
    }else{
        str[num] = '.';
        str[num+1] = '.';
        str[num+2] = '.';
        str[num+3] = '\0';
        for(i = num+3;i < cnt;i++)str[i] = '\0';
        printf("%s",str);
    }

    return 0;
}