Task: Program Execution
Input (English): 13, 18, ['1517', '4857', 'u', 'O', 'p', '801', 'x', '7915', '4219', 'o', '2097', '8753', 'B', '7545', 'X', 'n', 'q', '5147', '821']
Output (English): 5147, q, n, X, 7545, B