Duplicate Characters

You are given a string S. Your task is to output a new string where each character in S is duplicated.

For example, if S = 'hello', the output should be 'hheelllloo'.

Formally, if \(S = s_1s_2\cdots s_n\), then you should output \(s_1s_1s_2s_2\cdots s_ns_n\).

inputFormat

The input consists of a single line containing the string S. S can include letters, digits, spaces, and punctuation marks.

outputFormat

Output the modified string where every character in S is duplicated. The result should be printed in one line.

hello

hheelllloo