PROBLEM LINK:

Contest
Practice

Author: Amit Kumar Pandey
Editorialist: Amit Kumar Pandey
Tester: Arkapravo Ghosh

Dificulty

Midium

PREREQUISITES

Ad-hoc, Dictionary

PROBLEMS

The issue with the keyboard is that the key placement is not appropriate. The keys of the right hand are faulty.

EXPLANATION:

The keys on the right hands are faulty. The keys are rotated by one place rightward. So, if one presses 'y' then 'p' is printed. So in the string printed by the keyboard, if 'p' is there then the user actually wanted to print 'y'. and so on.

AUTHOR'S AND EDITORIALIST'S SOLUTIONS:

Author's and editorialist’s solution can be found here.
Tester's solution can be found here