Task: Program Execution
Input (English): 4, ['2603', '6821', 'Q', '5597', 'x', '7631', 'S', '1447', '9181', 'C', 't', '5937', '3161', 'j', 'V', 'T', '8331', 't', 'o', 'd', '3671', 'd', 'y', 'Y']
Output (English): 2603, x, 9181, 3161, 8331, 3671