Task: Program Execution
Input (English): 18, 20, ['c', '8973', 'z', '2213', '5571', 'm', 'H', '2955', 'E', '1969', 't', '8293', '2185', 'i', '5241', '1291', '8367', 'T', '1845', 's', '4099', 'H', '2459', '6503', '3569', 'i']
Output (English): s5481T