Task: Program Execution
Input (English): 1, 19, ['w', '5475', '5443', '9781', 'X', 'Y', 'C', 'a', 'm', 'Q', '2935', '7967', '3229', '9583', '9077', 'c', 'Y', 'a', 'Q']
Output (English): QaYc77093859922376975392QmaCYX187934455745w