Task: Program Execution
Input (English): 1, 8, ['3207', 'R', '5725', '6351', '9441', 'B', 'C', 'u', '9861', 'i', '6261', '2317', '17', '5031', 'K', 'a', 'a', 'l', '9703', 'V', '5645']
Output (English): 3207, 9861, a