Competitions
Week 6: December 14 - 20. Char arrays 1
Characters doubling
Given a string consisting of lowercase Latin letters, punctuation marks and spaces. Double all Latin letters in it.
Input
One line, consisting of lowercase Latin letters, punctuation marks and spaces.
Output
Print a string with all doubled Latin letters.
Input example #1
welcome to python!
Output example #1
wweellccoommee ttoo ppyytthhoonn!