#24. 字符串前缀拼接
字符串前缀拼接
Triple Front
Background
In the world of string processing, sometimes we need to operate on specific parts of a string.
Problem Description
Given a string, we'll say that the front is the first 3 chars of the string. If the string length is less than 3, the front is whatever is there. Return a new string which is 3 copies of the front.
Input Format
Input is given from standard input in the following format.
A single line containing a string.
Output Format
Output is printed to standard output in the following format.
A single string, which is the result.
Sample
Java
JavJavJav
Chocolate
ChoChoCho
abc
abcabcabc
Sample Explanation
For the first sample, the input string is Java. Its length is greater than 3, so the "front" is the first 3 characters Jav. Repeating Jav 3 times gives JavJavJav.
Constraints
Time limit: 1 second per test case. Memory limit: 1024 KiB per test case.