Score : $100$ points
On some day in January $2018$, Takaki is writing a document. The document has a column where the current date is written in
yyyy/mm/dd format. For example, January $23$, $2018$ should be written as
After finishing the document, she noticed that she had mistakenly wrote
2017 at the beginning of the date column. Write a program that, when the string that Takaki wrote in the date column, $S$, is given as input, modifies the first four characters in $S$ to
2018 and prints it.
Input is given from Standard Input in the following format:
Replace the first four characters in $S$ with
2018 and print it.