Task: Program Execution
Input (English): 7, ['U', 'P', 'd', '8355', '6819', 'x', 'Q', 'e', 'R', 'H', '2257', 'o', '1669', 'R', '2281', '253', 'j', '8109', '689', '4897']
Output (English): U, P, d, 8355, 6819, x, Q