Task: Program Execution
Input (English): 9, 20, ['R', '4973', 'Y', '3731', 'D', 'B', 'V', '7131', '1617', 'S', '9789', 'u', 'I', '9543', '3025', 'H', '6159', 'U', '4341', '1161', '5099', '3335', 'L', '4299', '251']
Output (English): 11614341U6159H30259543Iu9789S1617