Task: Program Execution
Input (English): 5, 18, ['2175', '2991', '7831', '4565', '2127', 'y', 'a', '3899', 'H', 'r', 'I', 'd', '4631', 'p', 'q', 'm', 'd', 'U']
Output (English): 2127ya3899HrId4631pqmdU