Task: Program Execution
Input (English): 3, 9, ['1545', '5831', '4697', 'l', '3367', 'q', '5317', 'X', '8467', 'N', 'a', '1031', 'O', '5597', 'z', 'Q', 'f', '7013', '2623', '6691', '339', '1907']
Output (English): 7648X7135q7633l7964