Task: Program Execution
Input (English): 13, 18, ['6061', '1757', '8837', 'j', '5425', '2421', 'u', '7887', '3757', 'L', 'E', '8317', 'O', '9507', 'm', '3229', '6091', 's', 'V', '459', 'r', 'T']
Output (English): s60913229m9507O