Task: Program Execution
Input (English): 4, ['2547', 'R', '7181', '5951', '4775', 'X', 'b', '5095', '1717', '2149', '9277', 'U', '5629', '6667', '1651', 'G', '3441', 'N', '1875', 'v', '277', 'E', '893', '2441', 'T', 'f']
Output (English): 2547, R, 7181, 5951