Task: Program Execution
Input (English): 1, 25, ['5405', 'o', '6897', '5797', 'P', 'x', 's', 'C', '4783', '6127', '9345', '6451', 't', '4945', '371', '5487', '7191', '2107', 'd', 'C', 'T', 'U', '3759', 'F', 'N', 'a']
Output (English): NF9573UTCd7012191778451735494t1546543972163874CsxP79757986o5045