Problem

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AND ABOUT. Surname

Problem

Enter your first name, middle name and last name. Convert them to "initials-surname" format.

Input: The first line is a sentence. Words are separated by one space, there are no extra spaces at the beginning and end of the text.

Output: You need to output the modified string.
 
Examples
# Input Output
1 Inav Ivanovich Ivanov I. I. Ivanov