Double Characters

Given a string S, your task is to create a new string where each character of S is repeated twice consecutively. For example, if S = abcd, the output should be aabbccdd. This problem tests basic string manipulation skills and is ideal for beginners. Use loops or built-in functions to achieve the result.

Mathematically, if S = s₁s₂...sₙ then the output should be s₁s₁s₂s₂...sₙsₙ.

inputFormat

The input consists of a single line containing the string S. The length of S is between 1 and 1000 characters.

outputFormat

Output the transformed string where each character in S is duplicated consecutively.## sample

abcd

aabbccdd