A. KEPPEK Upsolve
KEP
Input
The first line contains a string of Latin letters, s(1≤|s|≤10).
Output
Output the answer to the problem.
Sample input 1
KEP
Sample output 1
KEPPEK
Sample input 2
ab
Sample output 2
abba
KEP
The first line contains a string of Latin letters, s(1≤|s|≤10).
Output the answer to the problem.
KEP
KEPPEK
ab
abba