Task: Program Execution
Input (English): 1, 15, ['5519', '2889', '5261', '8107', 'm', 'N', '8037', '3257', 'W', '8065', 'G', '2357', 'P', 't', 'B', 'L', '2781']
Output (English): 5519288952618107mN80373257W8065G2357PtB