Task: Program Execution
Input (English): 19, 23, ['h', '4749', '1925', 'f', '9219', 'O', 'a', '967', '7913', '8105', 'J', '35', '9393', '4343', 'f', 'x', '561', 'p', 'u', 'f', 'C', 'u', '8103']
Output (English): ufCu8103