Task: Program Execution
Input (English): 3, ['5621', 'x', '1547', '8571', '529', '2563', '7263', '6033', 'x', '6581', 'Z', 'L', '3263', '4791', 'J', '4611', 'J', '1685', 'T', '2403', '6577', 'L']
Output (English): 5621, x, 1547