Task: Program Execution
Input (English): 3, 4, ['8945', '6003', 'Y', 'r', 'L', 'n', 'I', 'z', 'g', 'X', 'S', '6067', '8233', '4415', '3909', '175', '9665', '219']
Output (English): Y, I, S, 3909