Task: Program Execution
Input (English): 3, 7, ['Y', 's', 'g', '8607', 'j', 'U', '8249', '3911', 'a', 'z', 'k', 'O', '5737', 'o', '4725', '1787', '8555', 'A', '9469', '963', '6871', 'a']
Output (English): g, z, 8555