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: Runtime Error)

#include <stdio.h>
#include <string.h>

int main(){
    int N;          // 入力
    char str[100];    // 入力
    char strtmp[100];
    
    scanf("%d", &N);
    scanf("%s", str);
    
    int mojisuu = strlen(str);

    if(N <= mojisuu)
    {
        strncpy( strtmp, str, N ); //strの先頭+3の位置から5文字をtにコピー
        for(int i = 0;i < mojisuu - N ; i++)
        {
            strcat( strtmp , ".");
        }
        
    }
    else
    {
        strcat( strtmp , str);
    }
    printf("%s\n",strtmp);
    
}