Task: Program Execution
Input (English): 1, 15, ['4569', 'k', 'j', 't', '3735', '1773', 'z', 'b', 'P', '3445', '3491', '8759', 's', '7245', '9405', '3251', 'J', '887', '8975', 'z', '3953']
Output (English): 42422