Task: Program Execution
Input (English): 4, ['U', '8105', 'O', 'X', 'X', '1129', 'f', 'f', '4869', '8561', '3701', 'u', '5135', '4239', 'm', 'Z', '5013', 's', 'V', '3853']
Output (English): U, 8105, O, X