Task: Program Execution
Input (English): 11, 18, ['3393', '2681', 'Y', '67', '3215', 'x', '6619', '5133', '1857', '159', '9157', '4181', '8155', 'b', '3225', '5197', 'f', '6715', '1659', 'o', 'Z', 'k', '23']
Output (English): 6715f51973225b815541819157