Task: Program Execution
Input (English): 13, 18, ['4085', '5727', '7511', '5887', '8941', '6173', '7147', 'B', '7445', 'e', 'r', 'l', 'f', 'N', '4555', '709', '8697', 'u', '4169', 'S', 'B', '5157', '6277']
Output (English): u86977094555Nf