Task: Program Execution
Input (English): 4, 20, ['4293', '7715', '9975', 'Y', 'g', '7299', '2101', '1661', '3245', '671', '5713', '4449', '4793', 'X', '4427', 'M', '3239', 'H', 'U', '3859', '6715']
Output (English): 3859UH3239M4427X4793444957136713245166121017299gY