Task: Program Execution
Input (English): 9, 10, ['1525', 'O', 'a', '9837', 'o', 'd', '5107', 'o', 'V', '3991', '3845', 'n', '1237', '3533', 'x', '6569', '6035', 'k', '4355', 'W', '4281', '4457', 'C']
Output (English): 3991V