Task: Program Execution
Input (English): 4, 8, ['Y', '2737', '2789', 'r', 'B', 'c', 'v', '8363', '9921', '2177', '7465', 'J', 'w', '4559', '6449', 'O', '4665', 'J', '6195', 'm', '8553', 'b']
Output (English): 8363vcBr