Task: Program Execution
Input (English): 4, 12, ['U', 'M', 'x', '5379', '1719', 'C', '1073', '1807', '2061', 'u', 'H', 'U', '103', 'U', 'y', '7117', '4557', '7095', 'h', 'E', '4369', '9983', 'j', 'Q', '6955']
Output (English): UHu160270813701C91719735