Task: Program Execution
Input (English): 15, ['4281', 'r', '7351', 'U', 'y', 'n', '1745', '3525', 'P', 'u', 'r', '4239', 'B', '6571', '4119', 'x', '4497', '5389', '6049', 'm', 'p', '1039', '6237', '3575', '7501', '973', 'x', '5477', '7859', 'C', '619', '2397', '4407', 'p']
Output (English): 4281, x, 619