Task: Program Execution
Input (English): 4, 15, ['4203', 'w', '2121', 'a', 'K', 'W', '8339', 'i', '7993', 'B', '2891', 'd', '6599', '5411', '5195', '557', '9673', '6807', '3067', 'v', '1353', '1281']
Output (English): 519554116599d2891B7993i8339WKa